15 Best Dwarf Crayfish Tank Mates (& What To Look For)

Dwarf crayfish are sought after in the aquarium hobby because of their vivid colors and lively nature. However, choosing suitable companions for these colorful and active crustaceans can be difficult, as they can display aggression towards certain species.

In this article, we will discuss some of the best tankmates for your dwarf crayfish as well as what you need to look for in their tank mates. So, keep reading!

Best Dwarf Crayfish Tank Mates

Dwarf crayfish are fascinating and beautiful creatures that can be a great addition to your aquarium. They are peaceful and easy to care for, making them popular among aquarium enthusiasts. However, not all fish species are compatible with dwarf crayfish. In this article, we will discuss the 10 best dwarf crayfish tank mates.

Neon Tetras

Neon Tetra Care Sheet

Neon tetras are famous for their bright colors and active personalities. They are peaceful and will not bother your crayfish. Neon tetras prefer to school, so it’s best to keep them in groups of at least six.


Guppy Care Sheet

Guppies are another great option for dwarf crayfish tank mates. They are peaceful and colorful, adding a vibrant touch to your aquarium. And because they stay near the top of the tank, you won’t need to worry about them bothering your dwarf crayfish!

Corydoras Catfish

Common Corydoras Care Sheet

Corydoras catfish are distinguished by their armored plates and distinctive whiskers.  They are popular for their barbels, which are whisker-like organs that they use to locate food. And you may think that because corydoras are at the bottom of the tank they’re going to bother your dwarf crayfish, but this really isn’t the case.

I’ve been keeping corydoras catfish for years, and honestly, they’re some of the most peaceful fish you can keep. They’re friendly, but no when to keep themsleves to themselves.

Otocinclus Catfish

Otocinclus Catfish Care Sheet

Otocinclus catfish are small and peaceful fish that can coexist with dwarf crayfish. Otocinclus catfish are known for their round, disk-shaped mouths that they use to scrape algae off of surfaces, which adds a special touch to your fish tank. 

Endler’s Livebearers

Endler's Livebearers Care Sheet

Endler’s livebearers are peaceful and highly active swimmers that make great tank mates for your beloved dwarf crayfish. Endler’s livebearers love to enjoy exploring their surroundings and will usually stay at the top and middle areas of your aquarium.

Zebra Danios

Endler's Livebearers Care Sheet

Zebra danios are famous for their distinctive striped pattern and will surely add variety to your aquarium. Although they are peaceful, they may nip the fins of some of their tankmates so proper research is important before adding them to a community tank.

Pygmy Corydoras

Pygmy Corydoras Care Sheet

Pygmy corydoras are small hardy freshwater fish originally from the rivers of Brazil. When putting them in tanks with other fish, make sure that they have similar sizes and temperaments. Pygmy Corydoras love sandy substrate, so consider using that in your tank.

Harlequin Rasboras

Harlequin Rasbora Care Sheet

Harlequin rasboras are characterized by their varying bright colors and distinctive triangular shape. When caring for them, it is important to know that Harlequin Rasboras prefer soft acidic waters with a lot of aquatic plants. 

White Cloud Mountain Minnows

White Cloud Mountain Minnows Care Sheet

White cloud mountain minnows are chosen by many aquarists because of their shining, attractive red lateral stripes. These fish are also a good choice for community aquariums, but care should be taken to avoid housing them with larger, more aggressive fish that may view them as prey.

Kuhli Loaches

Kuhli loach care sheet

Kuhli loaches are elongated in shape and have a serpentine-like appearance. As scavengers, they can definitely help maintain your tank’s cleanliness as they will eat leftover food or detritus at the bottom of the aquarium.

Amano Shrimp

Amano Shrimp Care Sheet

Amano shrimp are non-aggressive invertebrates that will be great tankmates with your dwarf crayfish. They are known for their translucent body with distinctive red or brown markings.

Now you may be worrying that dwarf crayfish are going to attack your amano shrimp, but this isn’t the case. Because amano shrimp are larger, they can fend dwarf crayfish off quite well.

Mystery Snails

Mystery Snail Care Sheet

Mystery snails are peaceful invertebrates that can be fantastic tankmates with your dwarf crayfish. Due to their large size and colorful shells, they can surely add a splash of beauty to your aquarium. Mystery snails are active during the day and will help keep your tank clean by eating algae and leftover food. They are easy to care for and can thrive in a well-maintained aquarium.


Hatchet Fish Care Sheet

Hatchetfish are popularized by their unique, hatchet-shaped body, which is flat and elongated with a thin, translucent dorsal fin that resembles a small sail. When put in aquariums, they are notoious for their ability to jump and should be kept in a tank with a tight-fitting lid to prevent them from escaping.

Sparkling Gourami

Sparkling Gourami Care Sheet

Sparkling gouramis are a great choice for many fish tank owners due to their friendly nature and vividly colored fins, which can be blue, red, or orange. They are omnivorous and will eat a variety of foods, including flakes, pellets, and live or frozen foods such as brine shrimp or bloodworms. 

What To Look For In Dwarf Crayfish Tank Mates?

Dwarf crayfish can make interesting and entertaining additions to your fish tank, but choosing compatible tank mates is important for the well-being of all the inhabitants. Here are some factors to consider when selecting tank mates for your dwarf crayfish.

  1. Size Compatibility

One of the key factors to consider when choosing tank mates for your dwarf crayfish is size compatibility. It’s best to choose fish or invertebrates that are similar in size to your crayfish. Large fish may view the crayfish as prey, while smaller fish may be seen as food for the crayfish. Therefore, it’s best to choose tank mates that are similar in size to your crayfish.

  1. Temperament

Another factor to consider is the temperament of the potential tank mates. Look for peaceful fish that are unlikely to attack or harass your crayfish. Aggressive or territorial species should be avoided, as they may harm or even kill the crayfish. Choosing peaceful species can help ensure a harmonious aquarium environment.

  1. Water Parameters

The water requirements of potential tank mates should also be taken into consideration. Dwarf crayfish prefer neutral to slightly alkaline water with a pH of 7.0 to 8.0 and a temperature range of 68 to 78 degrees Fahrenheit. Make sure the water parameters of the potential tank mates are compatible with those of the crayfish.

  1. Activity Level

It’s also important to choose fish that have a similar activity level to the crayfish. Overly active or fin nipping fish can stress out the crayfish and cause them to become aggressive. Therefore, it’s best to choose fish that are not overly active or prone to fin nipping.

  1. Invertebrates

Another option to consider when selecting tank mates for dwarf crayfish is other invertebrates such as snails or shrimp. These species can coexist peacefully with your dwarf crayfish and help to create a balanced ecosystem in your aquarium.


Can Crayfish Go In A Community Tank?

Crayfish can be kept in a community tank, but it’s important to choose tank mates carefully and provide adequate hiding places and territories to avoid aggression or territorial disputes. Crayfish can be aggressive toward other bottom-dwelling fish, especially those with long-flowing fins such as bettas or guppies, as they may see them as potential prey. 

What Tank Mates Should You Avoid?

It’s best to avoid keeping crayfish with any species that are too small or too slow to escape their grasp, as crayfish are opportunistic feeders and may see them as prey. Also, Avoid larger or aggressive fish at all costs. For example, Cichlids are known to eat dwarf crayfish, so it’s best to avoid them.

Can You Put Two Crayfish Together?

In general, it’s not recommended to put two crayfish together in the same tank, as they can be territorial and aggressive towards each other. If you want to keep multiple crayfish, it’s best to provide separate territories or aquariums for each individual crayfish to prevent any potential conflicts or fights.

Will Crayfish Get Eaten In The Tank?

Crayfish can be preyed upon by some larger fish species in the aquarium, especially if they are small or juvenile. Some fish, such as cichlids or larger predatory species, may see crayfish as a potential food source and may attack or kill them.

Are Dwarf Crayfish Aggressive?

Dwarf crayfish are generally not as aggressive as larger crayfish species, but they can still exhibit territorial behavior and may become aggressive towards other bottom-dwelling invertebrates or small fish if they feel threatened or their territory is encroached upon. 


In conclusion, selecting the right tank mates for your dwarf crayfish is crucial to creating a harmonious and thriving aquatic community. With the information and tips provided in this article, you are well-equipped to choose suitable tank mates for your dwarf crayfish and create a beautiful and healthy aquatic environment that you can enjoy for years to come!

About the author

Hey there! I'm Antonio, the passionate owner and chief editor of Betta Care Fish Guide. With over half a decade of hands-on experience, I've become your go-to expert for all things betta and tropical fish.

Over the past 5 years, I've not only kept bettas and other tropical fish but also connected with a diverse network of hobbyists, seasoned fishkeepers, and even veterinarians.

Now, I want to help other beginner fish keepers who had the same questions as me when they were just starting out! So they can save themselves a ton of time and keep their fish happy and healthy!

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