Corydoras Catfish: Complete Care For These Fascinating Fish!

Corydoras catfish are popular aquarium fish known for their unique looks and calm behavior. Whether you’re planning to take care of them or are experienced in fishkeeping, it’s very important to know the essentials of Corydoras catfish care to ensure their happiness. 

So, keep reading this article to find out everything you need to know! 


Corydoras catfish, are some of the most beginner-friendly fish you can buy, making them a wonderful choice if you’re just starting out. They’re highly social, so just make sure you’re keeping them in groups of 6 or more.

When picking out a tank, choose one that’s more horizontal than tall and at least 10-20 gallons or larger (depending on the species). The water temperature should be maintained between 74-80°F, and the pH should range from 7.0-8.0.

Corydoras are omnivorous by nature, so their diet should include both plant and animal matter, although high-quality sinking pellets should form the main part of their diet because of their bottom-feeding nature.

Maintaining the best water quality possible in their tank is essential to help prevent these diseases. With suitable care, your Corydoras catfish can live for up to 10 years.

In terms of tank mates, go for friendly and peaceful species that are unlikely to cause stress or harm to the Corys. Good options would be neon tetras, cherry barbs, platies, and small peaceful loaches.

Are Corydoras Catfish Easy To Keep?

Corydoras catfish are pretty easy to keep in aquariums. They’re popular, especially for beginners, because they’re calm, peaceful, small, and require minimal care. Let’s look at the reasons why they’re considered easy to keep.

First of all, Corydoras catfish are tough and can handle different water conditions. They can live in various pH levels, temperatures, and water hardness. So, you can keep them in different types of aquariums without worries.

Additionally, they’re friendly and get along with other fish. You can keep them with different types of fish without any problems. They’re not aggressive and like to swim in groups.

Moreover, they stay small, usually around 2 to 3 inches long. This means you can keep them in smaller aquariums and have more options for other fish. Furthermore, they stay near the bottom of the tank and eat food scraps and debris, which helps keep the tank clean.

Another point is that Corydoras catfish eat a variety of foods. They can eat flakes or pellets, as well as live or frozen foods like bloodworms and brine shrimp.

And lastly, they don’t need a fancy setup. As long as you have a well-maintained tank with good filtration, clean water, and a suitable substrate that won’t hurt their barbels, they will be happy.

(If you want to know about 15 great easy fish to take care of, then you need to check out this article! Over 150 fish keepers have spoken!)

corydoras community thoughts 1
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NameCorydoras Catfish (Corydoras)
Cost$2.99-$30.00+ Per Fish
OriginSouth America (Andes Mountains – Atlantic Coast, Trinidad to Northern Argentina)
Care LevelEasy
Lifespan5-10 Years
Size1-5 Inches
Tank Size10 Gallons Or Bigger
FeedingFish Flakes, Live Food, Blanched Vegetables
Community Tank Yes
Tank LevelTop Level
PlantsJava Fern, Anubias, Amazon Sword, Vallisneria, Water Sprite
Tank MatesNeon Tetras, Harlequin Rasboras, Ember Tetras, Dwarf Gourami’s, Cherry Shrimp
Breeding TypeEgglayers


Corydoras Catfish have a unique look that makes them stand out in any fish tank. They have a sleek and long body shape, just like other catfish. Also, their bodies are covered in tough plates that protect them, giving them an armored look.

What’s interesting about Corydoras Catfish is their face. They have long barbels, which are like whiskers, sticking out from their mouth. These barbels help them find their way around and locate food by sensing their surroundings. It’s really cool to watch them use these sensitive barbels!

When it comes to colors, Corydoras Catfish come in different shades and patterns. Some are one solid color, like bronze or black, while others have stripes, spots, or speckles. These colors and patterns make them look vibrant and add excitement to the aquarium.

Corydoras Catfish also have big and expressive eyes that seem to sparkle in the light. Their eyes give them a curious and adorable appearance, which makes them a joy to observe.

Corydoras Catfish


Corydoras Catfish are small fish that are just the right size for aquariums. On average, they grow to be about 2 to 3 inches long, so they don’t take up much space. And being small makes them a good fit for different-sized aquariums. 

It’s important to know that the size can vary a bit depending on the type. Some may be a little smaller, while others might reach up to 4 inches long. But in general, they stay in the small size range. And because they’re small, Corydoras Catfish can happily live with other fish in the aquarium without overcrowding it.

So, if you’re looking for a small fish to add to your aquarium, Corydoras Catfish are a great choice. They’re the right size and will bring their own special charm to your tank!


Corydoras Catfish are social and active fish known for their interesting behaviors, like exploring the bottom of the tank, swimming together, being peaceful, and hiding when they’re scared.  They’ll keep you entertained and make your aquarium a fun place to be!

One thing they like to do is explore the bottom of the tank. They search for food and scavenge by sifting through the substrate. They have whisker-like barbels that help them find bits of food to eat. As they eat up leftover food and debris, they get well-fed and help keep the tank clean.

Corydoras Catfish also like to swim together. They feel safe and happy when they’re in a group. So, it’s good to have a bunch of them in the tank. Also, when corys swim together gracefully, they create a magnificent sight!

Corys are also very peaceful. They get along well with other fish and don’t cause any trouble. They mind their own business, which makes them great tank mates for other fish. In fact, you can put them in a variety of tanks with a variety of different fish!!

Sometimes, when Cory catfish get scared, they quickly swim away and hide. They’re good at finding tight spots or burying themselves in the sand, helping them stay safe from any big fish that might want to eat them.


Corydoras Catfish can live for a good number of years, bringing joy to fish lovers. On average, they live for about 5 to 8 years, but some have been known to live even longer if they’re taken care of well.

To help your Corydoras Catfish live a long time, you need to give them proper care and a good home. Keep their tank clean, make sure the water is right for them, and give them a balanced diet. These things keep them healthy and help them live longer.

It’s important to know that factors like genes, individual health, and the specific type of Corydoras Catfish can also affect how long their lifespan will be. Some kinds may live a little less or a little more than the average time.

Taking care of the water quality, using the right filters, and regularly changing the water are all important to keep your Corydoras Catfish healthy. These things help prevent stress, diseases, and other things that can make their lives shorter.

Also, it’s good to make sure they get along with the other fish in the tank. Keep them with fish that won’t hurt them and give them enough space to swim around and places to hide. This helps them feel safe and live longer.

Corydoras Catfish Water Parameters

Corydoras Catfish have specific water requirements to thrive in an aquarium. So, here are the things you need to remember for their water parameters.

NameCorydoras Catfish
Tank Size10 Gallons Or Bigger


The water should be slightly acidic to neutral, with a pH level between 7.0 and 8.0. This range mimics their natural habitat, providing them a comfortable environment.


In terms of temperature, they like it warm. Keep the water between 74 and 80 degrees Fahrenheit. It should stay at a consistent temperature within this range to keep them stress-free. 

Water Hardness

Water hardness is another important factor to consider. Corydoras Catfish prefer soft to moderately hard water, so the ideal water hardness level is between 5 to 10 dGH. Keeping the water within this range ensures their well-being.

Corydoras Catfish Tank Size

Corydoras Catfish need a tank that’s big enough for them to be happy and move around comfortably. Generally, a good tank size for Corydoras Catfish is at least 10 gallons. This gives them plenty of space to swim and do their thing without feeling cramped.

And remember, when choosing a tank for Corys, the bigger the tank, the better. This is especially true if you plan to keep them in a community tank. Whether you decide to keep schools of Cory or keep them with other types of fish, make sure the tank is big enough to fit everyone comfortably.

Having a larger tank is better because it helps keep the water clean and stable. And no matter the tank size, always remember the importance of having a good filter and doing regular water changes. Lastly, make the tank comfortable for your catfish by adding plants, hiding spots, and a good substrate.

Common Corydoras Care Sheet

What Do Corydoras Catfish Like In The Wild?

Corydoras Catfish are originally found in freshwater rivers and streams in South America. They’re bottom-dwelling fish that thrive in areas with sandy or muddy substrates. Corys like it when the bottom is sandy or muddy because it’s easier for them to find food by sifting through the sand. 

In their natural habitat, Corydoras Catfish prefer areas where the water flows moderately or slowly. They’re not strong swimmers, so they feel more at ease in calmer waters. They also enjoy being around plants, fallen leaves, and branches in the water. These things give them places to hide and feel safe.

When it comes to food, Corydoras Catfish eat small insects, worms, crustaceans, and plants. They’re not picky eaters and can have both animal and plant food. They have special whiskers that help them find food at the bottom of the water.

Being social is important to these catfish. They often live in groups or schools. Being part of a group helps them feel protected, find food, and communicate with each other.

To make your aquarium feel like their natural habitat, you can use sand or a sandy substrate. Keep the water flow moderate, and add some plants or hiding spots. Offer them a diet that includes small insects, worms, and plants. 

And finally, keeping a few Catfish together will make them happy, just like when they’re home!

How To Setup A Tank For Corydoras Catfish

Setting up a tank for Corydoras Catfish requires some careful planning to give them a suitable and comfortable environment. Let’s go through the steps to create an ideal home for these delightful fish.

Choosing the Right Tank Size

To start setting up a tank for Corydoras catfish, make sure to pick the right tank size. These fish like to explore, so go for a tank that’s at least 10 gallons or bigger if you plan on adding more fish. This will give them enough space to move around comfortably. 

After choosing the tank, it’s time to set up the right equipment.

Marina LED Aquarium Kit, 10 gallon
  • 10 U.S. gallon glass aquarium


Corydoras catfish prefer water temperatures between 74°F and 80°F. So, install an aquarium heater to maintain a consistent and comfortable temperature for your catfish.

Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal.
  • Modern Aesthetic: M-Series heaters combine modern aesthetics with reliable Italian construction. Employing an ultra-slim profile, these heaters are a welcome departure from traditional, bulkier designs.


A good filter is important to keep the tank water clean and healthy. Make sure to choose a filter suitable for your tank size and follow the instructions to set it up. The filter will remove debris and harmful toxins, making the environment safe for your Corydoras catfish.

Marineland Penguin Bio-Wheel Power Filter 100 GPH, Multi-Stage Aquarium Filtration
  • REPLACEMENT FILTER CARTRIDGE: Pack of 3 cartridges fits Marineland Penguin PRO Power Filters 100, 125 and 175; also fits the original Penguin Power Filter 150.


Next, add sand, aquarium soil, or smooth gravel to the bottom of the tank. This substrate mimics the riverbeds where Corydoras catfish naturally live and provides a place for them to dig and search for food.

Fluval Plant and Shrimp Stratum, For Fish Tanks, 4.4 lbs., 12693
  • Fluval Stratum is made of mineral rich volcanic soil

Water Conditioner

Before adding water to the tank, use a water conditioner to remove harmful chemicals like chlorine. Follow the instructions on the conditioner bottle to ensure you use the right amount.

Seachem Prime Fresh and Saltwater Conditioner – Chemical Remover and Detoxifier 500 ml
  • POWERFUL TREATMENT: Seachem Prime is a complete and concentrated conditioner for both freshwater and saltwater fish tanks, working hard to remove chlorine and chloramine.

Testing the Water

Regularly test the water in your tank using an aquarium test kit. This helps you keep an eye on ammonia, nitrite, nitrate, pH, and other essential factors. By maintaining these levels, you’ll provide a healthy environment for your Corydoras catfish.

API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored
  • Contains one (1) API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, including 7 bottles of testing solutions, 1 color card and 4 tubes with cap

Adding Substrate and Water

Once the tank equipment is set up, evenly spread the chosen substrate on the tank’s bottom. Then, slowly add water that has been treated with a water conditioner to remove harmful substances. Fill the tank to an appropriate level, giving your catfish enough swimming space.

Creating Hiding Spots

Corydoras catfish enjoy having hiding spots in their tank. Provide caves, driftwood, or other decorations where they can take cover. These hiding spots replicate their natural habitat and reduce stress, promoting their overall health.

Introducing Suitable Tank Mates

Consider adding compatible tank mates to create a peaceful community. Corydoras catfish generally get along well with calm and non-aggressive species like small tetras or peaceful dwarf cichlids. Make sure to research the compatibility and requirements of potential tank mates beforehand.

Providing a Balanced Diet

Feed your Corydoras catfish a varied and balanced diet. As omnivores, they eat both plant and animal matter, so offer sinking pellets or wafers designed for catfish, as well as frozen or live foods like bloodworms or brine shrimp. 

Feed them small amounts multiple times a day to prevent overeating and ensure they receive proper nutrition.

(If you want to know a complete guide, on how to setup a fish tank, then here’s what you need to do!)

Corydoras Catfish Male Vs Female

Corydoras catfish are popular aquarium fish known for their interesting behavior and unique appearance. By observing their size, body shape, fin characteristics, behavior, and vent shape, you can get clues to identify the gender of your Corydoras Catfish. 

Physical Appearance

When it comes to telling males and female Corys apart, looking at their physical features is helpful. Males tend to have a slender and streamlined body shape, while females have a rounder and broader body, especially when they’re carrying eggs. 

Barbel Length

Barbels, which are whisker-like organs near the mouth, can also provide clues about the catfish’s gender. Males usually have longer and thicker barbels compared to females. These longer barbels are used during mating rituals to attract females.

Vent Shape

Examining the vent, the opening near the anal fin, can also give hints about the catfish’s gender. Males have a slightly pointed vent, while females have a rounder and broader one. This difference becomes more noticeable during breeding when the female’s vent may protrude due to the presence of eggs.

Behavioral Differences

While not always reliable, observing their behavior can offer some insights into their gender. During breeding, males tend to be more active and display courtship behaviors such as chasing and nudging females. Females, on the other hand, may search for nesting spots or guard their eggs.

Corydoras Catfish Diet

As omnivores, Corydoras catfish have a diverse diet And because they’re bottom feeders, they prefer to stay at the bottom of the aquarium and feed on various things. In their natural environment, they consume small bugs, tiny shellfish, green stuff like algae, and decaying matter. 

To keep them healthy in your fish tank, it’s important to provide them with a similar diet.

Feeding Corydoras catfish involves a few important considerations. Firstly, offer them sinking pellets or flakes specifically designed for bottom-dwelling catfish. These foods contain the necessary nutrients to support their health. 

Additionally, it’s beneficial to occasionally provide them with live or frozen treats. They enjoy treats like bloodworms, small shrimp, and other tiny creatures, which are rich in protein and add variety to their diet.

Corydoras catfish also consume green foods such as algae and plants. You can give them algae wafers or boiled veggies like spinach, zucchini, or cucumber. These foods are rich in fiber and provide additional nutrients. Just make sure to soften the veggies by boiling them briefly before giving to your Corys.

Aqueon Bottom Feeder Tablets 3 Ounces
  • Ideal for bottom dwelling fish

Corydoras Catfish Tank Mates 

Now you know how to care for your corydoras catfish, here are five great tank mates you can add with them!

Neon Tetras

Neon Tetra Care Sheet

Neon Tetras are small and peaceful fish that need similar water conditions as Corydoras Catfish. They add bright colors to the tank and their active swimming complements the bottom-dwelling behavior of the catfish.

Harlequin Rasboras

Harlequin Rasbora Care Sheet

Harlequin Rasboras are friendly fish that will also be great companions for your Corydoras Catfish. These fish swim in the middle to upper areas of the tank, leaving the bottom space for your Corydoras catfish to explore.

Ember Tetras

Ember Tetra Care Sheet

Ember tetras are lively and colorful fish that thrive in the same water parameters as your Corys. They’re peaceful fish, making them ideal tankmates. 

Dwarf Gouramis

Dwarf Gourami Care Sheet

Dwarf Gouramis are small, colorful fish that peacefully coexist with Corydoras Catfish. They have a calm nature and display beautiful patterns and flowing fins, adding a lot of beauty to your tank.

Cherry Shrimp

Cherry Shrimp Care Sheet

Cherry shrimp are excellent tank mates for Corydoras catfish. They peacefully feed on algae and waste in the tank while staying at the bottom of the tank with your cory’s. Together, they make a great team and help maintain tank cleanliness.

(Want to know what the best community fish for your take are? I’ve compiled a list of the 50 best choices!)

Corydoras Catfish Plants

Here are five suitable plants that complement the beauty of your Corydoras Catfish tank:

Java Fern 

Java fern is a hardy plant that can tolerate a wide range of water conditions, making it an excellent choice for Corydoras catfish tanks. Its broad, green leaves provide hiding spots and resting places for the catfish. 

You can attach the roots of Java fern to driftwood or rocks to create a natural and attractive setup.

Java Fern Bare Root | Microsorum Pteropus – Low Light Freshwater Aquarium Plant
  • Provide natural resting and hiding places for your smaller fish and invertebrates


Anubias is another versatile plant that can withstand the catfish’s digging behavior. This plant also thrives in low-light conditions, making it ideal for Corydoras Catfish tanks. Its broad, dark green leaves provide cover and create a natural appearance in your Corys’ tank.

SubstrateSource Anubias Live Aquarium Plants – Potted Freshwater Plant for Fish Tanks, Terrariums – Beginner Friendly Low Light (Nana, 1 Pot)
  • Anubias Nana is one of the most popular aquatic plants loved by both beginners and experts alike, and will instantly give your aquarium, paludarium, or terrarium a lush and natural appearance.

Amazon Sword

Amazon Sword is a large, leafy plant that creates a lush and natural environment for Corydoras Catfish.  Its long, flowing leaves also offer shade and hiding spots for the catfish. Moreover, it helps maintain water quality by absorbing nitrates and adding oxygen to the tank.

Amazon Sword – Echinodorus Bleheri x3 Plants – Live Aquarium Plant
  • Echinodorus bleheri from South America is undemanding and beautiful, and becomes 20-50 cm tall.


Vallisneria, also known as eelgrass, is a tall and slender plant that adds interest to the tank. It creates a natural look to your tank and allows your fish to swim comfortably along the bottom. Vallisneria also helps keep the water clear by taking in extra nutrients.

Jungle Vallisneria Rooted Plants 1.5-2 Feet Tall – Easy Background Aquarium Plants
  • PLEASE READ BEFORE ORDERING: Please note that during times of extreme weather conditions, live plants will suffer due to extreme temperatures. During winter, do not order live plants when temperatures are expected to go below 20F at the lowest point during the day. During summer, avoid ordering plants when temperatures are above 100F. If you place an order under extreme weather conditions we will not able to guarantee live arrival

Water Sprite 

Water Sprite is a floating plant that adds a beautiful touch to Corydoras Catfish tanks. Its delicate, feathery leaves provide shade and cover for the catfish. Water Sprite also aids in adding oxygen to the water and removing nitrates.

Corydoras Catfish Breeding

Breeding Corydoras Catfish requires planning, dedication, and suitable conditions, and success may require several attempts.

But overall, it is an exciting and rewarding experience for fish keepers. Here’s a basic overview of the breeding process:

Creating the Right Conditions

To encourage breeding, make sure the tank mimics the natural home of Corydoras Catfish. Keep the water temperature stable between 72-82°F and maintain a slightly acidic to neutral pH level around 7.0-8.0. 

Add hiding spots with plants, rocks, or caves for the catfish to feel comfortable and secure.

Preparing the Breeding Group

Choose a mature and healthy group of Corydoras Catfish. Feed them well with high-quality live or frozen foods to keep them in good condition and ready for breeding.

Triggering Breeding Behavior

Create a “rainy season” environment by performing a large water change using slightly cooler water. Lower the temperature a bit to mimic seasonal changes. These changes can stimulate the catfish to engage in breeding behavior.

Spawning Ritual

During courtship, the male Corydoras Catfish will chase the female to encourage egg-laying. The female will release a few eggs, and the male will fertilize them quickly. This process may repeat multiple times, resulting in a cluster of eggs.

Egg Care

Separate the adult catfish from the eggs to protect them from being eaten. Transfer the eggs to a separate container with gentle water flow, like a breeder net or another tank with a sponge filter. Keep the water conditions similar to the main tank.

Hatching and Fry Care

Corydoras Catfish eggs usually hatch within 4-7 days. The newly hatched fry will remain attached to the egg sac for a few more days. Once they start swimming freely, feed them specialized fry food or crushed flakes. Provide hiding spots and gentle filtration to ensure their safety and growth.

Corydoras Catfish Common Diseases 

As you keep your Corydoras Catfish healthy in your aquarium, you may still encounter some illnesses that need to be taken care of. So, here are some of the most common diseases, symptoms, and how you can treat them.

DiseaseSymptoms or CausesSuggested Action or Treatment
IchWhite spots on the body and finsRaise water temperature, use ich medication
Fin RotRagged or frayed finsIsolate affected fish, clean the tank, use antibiotics or antifungal medication
Swim Bladder DisorderDifficulty swimming, floating upside downFeed sinking food, improve water quality
DropsySwollen abdomen, raised scalesIsolate affected fish, use antibiotics or antifungal medication
Mouth FungusWhite or gray patches on the mouthIsolate affected fish, clean the tank, use antifungal medication
ColumnarisWhite patches on the body, fin erosionIsolate affected fish, clean tank and use antibiotics or antifungal medicine

How Many Corydoras Catfish Can You Keep Together?

When it comes to keeping Corydoras Catfish together, it’s best to have them in groups. The general rule of thumb is to have a minimum of 6 Corydoras catfish in a tank. However, the more Corys you have, the better!

The number of Corydoras Catfish you can keep depends on the size of your tank and the type of filtration you have. As a general rule, you should have a tank that can hold at least 10 gallons of water for a small group of 6 catfish. If you have a larger tank, you can keep even more of them.

Keeping your Corydoras Catfish with a larger group is good because they feel happier and less stressed. They swim around more and show their cool schooling behavior. 

However, it’s important to always think about how well your Corys get along with other fish when deciding how many you’ll keep. Make sure the tank is big enough for all the catfish and other fish to have space.

Facts About Corydoras Catfish

Let’s go over some very interesting facts about Corydoras Catfish that will make you appreciate their awesomeness even more!

  1. Corydoras catfish have a unique appearance with their armored plates covering their bodies. These plates not only give them a cool look but also provide protection against other fish that may eat them.
  1. These catfish are known for their scavenging nature. They help keep the aquarium clean by eating leftover food, algae, and other debris. 
  1. Corydoras catfish have long, slender sensory organs called barbels or whiskers around their mouths. These barbels help them navigate and detect food in the substrate.
  1. Using a special organ called a labyrinth organ, Corydoras catfish can breathe oxygen from the air in addition to using their gills.
  1. The breeding behavior of Corydoras catfish is fascinating. The male performs a courtship dance with the female, in which he follows her closely, often “hugging” her to induce egg release. Once the eggs are laid, the male fertilizes them by releasing milt over them.
  1. Corydoras catfish come in a wide variety of colors and patterns. From the classic bronze Corydoras to the beautifully patterned panda Corydoras, there is a diverse range of color variations to choose from.

Types Of Corydoras Catfish

Now, here are the most common types of awesome Corydoras Catfish you can choose from! 

  • Bronze Corydoras: These catfish have a bronze or greenish-brown body coloration. They’re popular for their peaceful nature and are excellent bottom dwellers that help keep the tank substrate clean.
  • Panda Corydoras: With their black and white markings, Panda Corydoras are visually appealing. They’re small, peaceful, and add liveliness to the tank.
  • Peppered Corydoras: Peppered Corydoras have a light body with small black spots, which gives them a peppered look. They’re hardy, adaptable, and provide constant entertainment to your aquarium.
  • Albino Corydoras: Albino Corydoras lack pigmentation, which makes them look uniquely pale and translucent. These peaceful catfish will definitely add a unique touch to your aquarium with their pinkish-red eyes.
  • Sterbai Corydoras: Sterbai Corydoras have a striking pattern of dark spots on a light body. Compared to other Corydoras, they’re much larger, easily making them stand out!
  • Julii Corydoras: Julii Corydoras have intricate black spots and lines on a light-colored body. These Catfish are known to form shoals, adding activity and beauty to your tank.
  • Pygmy Corydoras: These tiny catfish have a silver body with a black stripe across their eye. And because of their size and friendly nature, Pygmy corys are perfect for small tanks!
  • Adolfo’s Corydoras:  Adolfo’s Corydoras have vibrant colors with an electric blue stripe along their body. Moreover, these fish add elegance to any tank, so they’re definitely worth considering if you’re looking for a Corydoras catfish to keep.
  • Skunk Corydoras: Skunk Corydoras have a black stripe, just like a skunk’s markings. Aside from their unique look, these corys are known to actively search for their food and keeping the tank clean, so they’re also worth checking out!
  • Emerald Corydoras: Just like their name, Emerald Corys have an enchanting emerald green body. They’re peaceful, sociable, and bring so much beauty to any aquarium, which makes them a great choice for many fishkeepers.


Here are some more frequently asked questions that people have about caring for their corydoras catfish.

Do Cory Catfish Clean Your Tank?

Cory catfish are great at keeping your tank clean. They love to eat leftover food and algae, which helps to keep the tank tidy and healthy. With their small mouths and special whiskers, called barbels, they can easily clean the bottom of the tank and other surfaces.

Do Cory Catfish Need To Be In Pairs?

While Corys don’t have to be in pairs specifically, it’s better to keep them in small groups of three or more. This way, they can feel more secure and display their natural behaviors. 

Do Cory Catfish Prefer Sand Or Gravel?

Because Cory catfish have sensitive barbels, sand is gentler on them. They can sift through the sand easily to find food. And while they can tolerate gravel, it’s best to choose smooth-edged gravel if you decide to use it.

Do Cory Catfish Need Driftwood?

Having driftwood in the tank is beneficial for Cory catfish because it provides hiding places and mimics their natural habitat. Driftwood also releases tannins into the water, creating an environment they like.

Do Cory Catfish Need Algae?

While Cory catfish eat algae, they don’t rely on it alone. In fact, in a well-maintained tank, there may not be enough algae for them, so it’s important to offer them a varied diet that includes algae-based foods.

Do You Feed Cory Catfish Every Day?

It’s recommended to feed Cory catfish daily because they have high energy levels and are always searching for food. So, offer them a small amount of sinking pellets or flakes once or twice a day.

How Many Cory Catfish Should You Have In A Tank?

Cory catfish are social creatures, so it’s best to keep them in groups. Ideally, have a minimum of 6 Cory catfish in your tank. This ensures they feel secure and show their natural behavior.

Can You Keep Just 3 Cory Catfish?

While it’s possible to keep 3 Cory catfish, it’s generally recommended to have a larger group for their well-being. A group of 6 or more catfish allows for better social interaction and reduces stress.

Do Cory Catfish Eat Other Fish?

Cory catfish are peaceful and generally do not eat other fish. They have a small mouth and prefer to feed on the bottom of the tank, consuming leftover food and small invertebrates.

Will Cory Catfish Reproduce?

Cory catfish can reproduce in a suitable environment. They’re egg layers, and the females lay eggs on various surfaces in the tank.

Can You Touch Cory Catfish?

It’s best to avoid touching Cory catfish or any other fish. Because their skin is sensitive, touching them can cause stress or injury. So, it’s best to observe and enjoy their beauty from a distance to ensure their well-being.


Corydoras catfish are great additions to any aquarium with their beauty and liveliness. By providing a suitable tank, feeding them a balanced diet, choosing compatible tank mates, and maintaining the water conditions, you can ensure the well-being and happiness of your Corydoras catfish! 

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