How Big Do Aquarium Snails Get? (All Snails Included)

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Last Updated on 2023-05-24

If you’re wondering how big aquarium snails are going to get, then you’ve found the right article. In this article, not only will you find out how big aquarium snails get on average, but you’ll also learn how fast they grow, as well as the minimum tank size and how many snails per gallon!

So if you want to know more, find out everything there is to know!

How Big Do Aquarium Snails Get?

Most of the time, aquarium snails are going to grow between 1-2 inches in size. However, depending on the species, it’s possible for them to grow up to 6 inches in diameter! So when you’re choosing which aquarium snails to add to your tank, you should also consider their future size.

How Big Do Mystery Snails Get?

Generally speaking, you can expect mystery snails to grow up 2 inches or slightly bigger. However, in most cases, you can expect mystery snails to reach about 1 and a quarter inches in diameter.

How Fast Do Mystery Snails Grow?

When it comes to growth, you can expect mystery snails to go from babies to full size in a few weeks. However, their growth will slow down significantly as they age. And while they’ll keep growing throughout their lives, as they reach maturity, you won’t be able to notice much growth.

What Tank Size Is Best For Mystery Snails?

If you’re thinking about buying mystery snails, you should make sure you’re keeping them in a tank that’s at least 5 gallons in size; however, bigger is always better when it comes to tanks, so there’s no upper limit.

How Many Mystery Snails Per Gallon?

If you’re going to keep mystery snails, the max you should keep is two per gallon, with every additional snail requiring 2.5 gallons of space.

Macro shot of assassin snail in aquarium. Anentome helena.

How Big Do Nerite Snails Get?

While there are plenty of different types of nerite snails that all grow to different sizes, the biggest you can expect nerite snails to grow is about an inch in size (with females growing to be slightly bigger than the males). However, certain types of nerite snails will only grow to about half an inch.

How Fast Do Nerite Snails Grow?

You can expect your nerite snail to grow to its full size in around a year. After a year, they may still continue to grow, but the rate of growth will be drastically slower than the first year.

What Tank Size Is Best For Nerite Snails?

Nerite snails need a tank that’s 5-gallon minimum; however, like any aquarium dweller, the bigger the tank, the happier they’re going to be!

How Many Nerite Snails Can You Keep Per Gallon?

You can keep 1 nerite snail in every 5 gallons of water. However, fortunately, they’re solitary creatures, so if you only have a 5-gallon tank, one nerite snail will be fine on it’s own.

How Big Do Malaysian Trumpet Snails Get?

Malaysian trumpet snails are some of the tiniest aquarium snails out there. In fact, in captivity, you can expect them to only grow to about half an inch to an inch in size. Of course, the better the conditions they’re living in, the bigger they’ll grow.

How Fast Do Malaysian Trumpet Snails Grow?

Malaysian trumpet snails will grow rapidly in their first year of life. Normally growing about 1/10th of an inch per month. While this doesn’t sound a lot, it does mean they’ll reach the height of their growth within a few months of hatching.

What’s The Best Tank Size For Malaysian Trumpet Snails?

If you’re going to keep Malaysian Trumpet snails, you should make sure you’re keeping them in a tank that is at least 5 gallons in size. Even though they’re small, if you put them in a tank that isn’t big enough, they’ll be a lot more susceptible to water parameter changes.

How Many Malaysian Trumpet Snails Per Gallon?

The good news is, unlike a lot of the other snails, you can keep a lot Malaysian Trumpet snails together. In fact, you can keep 1 to 2 trumpet snails per gallon in your tank!

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How Big Do Apple Snails Get?

Apple snails are some of the biggest snails you can get for your aquarium. In fact, they’ve been known to reach up to 6 inches in diameter! However, it’s much more likely that an apple snail in your tank will reach around 2-3 inches before its growth slows down dramatically.

How Fast Do Apple Snails Grow?

Apple snails have rapid growth. In fact, they normally grow to 2-3 inches in size in just 3 to 4 months. So you can expect fully grown apple snails after just a few months!

What Size Tank Should Apple Snails Be Kept In?

If you plan on keeping apple snails, due to their large size, they’ll need a minimum tank size of 10 gallons; however, for the best results, you should put them in a tank that is 20 gallons in size.

How Many Apple Snails Per Gallon?

If you’re going to keep apple snails in your tank, then generally, you’re going to need about 3 gallons per snail. But because of their large size, the more you can give them, the happier they’re going to be!

How Big Do Assassin Snails Grow?

While you might think assassins snails are bigger because they hunt, this isn’t the case. In fact, assassin snails only tend to grow to about 3 inches in size. However, without proper care and the right water conditions, they may end up being smaller.

How Fast Do Assassin Snails Grow?

Assassin snails tend to reach their full size after about 6 months. And the good news is once they’ve reached full size, you’ll see them in your tank more often, as they’ll come out from the substrate.

What Tank Size For Assassin Snails?

Even though they’re not the biggest snails on this list, they’re going to need a large tank. In fact, if you plan on keeping assassin snails, while you can keep them in tanks as small as 10 gallons, ideally you should be keeping them in tanks that are 30 gallons in size or larger.

How Many Assassin Snails Per Gallon?

While you should only keep one assassin snail for the first 10 gallons, after that, you can add another assassin snail for every 5 gallons you have afterwards. So, for example, in a 15-gallon tank, you could have 2 assassin snails, in a 20-gallon tank, you could have 3, and so on.

How Big Do Ramshorn Snails Get

And last on the list is ramshorn snails. If you plan on keeping ramshorn snails, you’ll be pleased to know they stay very small. In fact, it’s very unlikely that ramshorn snails will grow more than an inch in your tank once you have them!

How Fast Do Ramshorn Snails Grow?

Thanks to their small size, ramshorn snails are going to grow extremely fast. In fact, you can expect a ramshorn snail to grow to its maximum size in about 4-6 weeks.

What Size Tank For Ramshorn Snails?

If you want to keep ramshorn snails, then the minimum tank size you should keep them in is 5 gallons. Anything smaller than that, and it becomes a lot harder to control the water parameters in the tank, which could become dangerous for your snails.

How May Gallons Per Ramshorn Snail?

After the first snail, which needs 5 gallons, you’ll only need an extra 2 gallons for each additional snail! This means you can have 3-4 snails in a 10-gallon tank, depending on how else it’s being stocked!


As you can see, different aquarium snails will grow to different sizes and reach their full size in drastically different time spans! However, no matter which type of snail you end up going for, with the right care, you can get any of them to grow to their full potential!

If you liked this article, make sure you check out the rest of the website! Otherwise, have a great day!

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