How Many Nerite Snails Per Gallon

How Many Nerite Snails Per Gallon – Quick Guide

The length of a Nerite snail is approximately 0.5–1 inch. They are cute and tiny, but hardy. People love to keep these creatures in aquariums due to their beautiful colors. Moreover, Nerite snails eat algae, and it is super easy to keep them in tanks for display. But, how many Nerite snails per gallon? 

One Nerite snail can live happily per 5 gallons. Also, 2 to 3 gallons are enough for one Nerite snail. However, a 5-gallon tank is best for keeping one nerite snail. As Nerite snails like to feed on a lot of algae, they need less crowded and bigger tanks to survive. Also, their huge appetite demands an aquarium capacity of at least 5 gallons.

Do you know Nerite snails die when your tanks are overcrowded? They feel frustrated with so many fellow Nerites. That’s why it is important to know the ideal requirements to capture Nerite snails.

Table of Nerite snails per gallon 

Here is a quick review table of how many Nerite snails per gallon:

Aquarium / Tank Capacity in GallonsNumber of Nerite Snails
5 gallons1 Nerite Snail
10 gallons2 Nerite Snails
15 gallons3 Nerite Snails
20 gallons4 Nerite Snails
40 gallons8 Nerite Snails
50 gallons10 Nerite Snails
70 gallons14 Nerite Snails
75+ gallons15+ Nerite Snails

Important Note:

According to the above-mentioned table, two snails demand a 10-gallon tank. But, how many Nerite snails per liter? According to the study, 5 gallons are approximately equal to 20 liters. Therefore, 20 liters are required to keep one snail, according to the thumb rule.

How many Nerite snails per gallon?

How many Nerite snails per gallon

Credit:-James St. John

As we have discussed before, 1 to 2 Nerite snails per 5 to 10 gallons of water is good to go. However, there are a few factors that also define how many nerite snails per gallon in an aquarium. For example, water parameters, tank size, and the availability of algae influence the appropriate number of snails.

How many Nerite snails in a 5-gallon tank?

How many Nerite snails can go in a 5-gallon tank is no mystery anymore! You can keep 1 to 2 Nerite snails in a 5 gallon (~100 liters) water tank. According to another study, you can accommodate 4 to 5 Nerite snails in a 5-gallon tank.

Remember, the less number of snails are kept in tanks, the more will be fresher and cleaner environment of the aquarium. Their waste can create a lot of mess. That’s why one of our Quora Digest colleagues recommended using a beta or backup tank to safely keep the nerites.

How many Nerite snails in 10 gallons?

The expected number of Nerite snails in a 10-gallon tank ranges from 2 to 5. But, keeping 2 Nerites in a 10-gallon tank gives them the perfect quality of life. Most aquarists love to keep 2 to 3 Nerite snails in a medium-sized 10-gallon tank.

If you put more than 5 snails in a 10-gallon tank, it will create problems like food shortages, space shortages, and egg issues. It is also recommended to keep male nerites if more than one snail is kept in the same tank. (Source) 

How many Nerite snails in a 15-gallon tank?

According to various recommendations, 3 to 5 Nerite snails in a 15-gallon tank is more than enough. No matter what the size of the Nerite, five Nerites can fit easily in a 15-gallon aquarium. Similarly, some experts say that 8 is also a good number of snails to keep if the aquarium is large and wide.

How many Nerite snails in a 55-gallon tank?

As a general rule of Nerites, 2 for 10 gallons is the best consideration. I mean to say, 10 to 12 Nerite snails are OK to live collaboratively in a 55-gallon tank. And, I think this is a decent number of snails in a big tank with hundreds of liters of water.

How many Nerite snails in a 75-gallon tank?

According to the balance table stated above, 14 to 15 medium-sized or large Nerite snails in a 75-gallon tank are fine. However, 6 to 9 snails are a good number. They will take more care of the tank and new algae blooms. So, how many horned nerite snails can go in the tank? Share your views.

Read also: Can snails lay eggs without mating?

Factors Involved in Calculating Optimal Nerite Snail Population

Nerite Snail Population

To accurately calculate the optimal Nerite snail population, you need to consider the following factors:

  • First of all, tank size is the main factor that needs to be considered. The size of the aquarium determines how many snails it can comfortably support. Generally, a guideline is about 1 Nerite per 5-gallon water tank.
  • Secondly, adjust the algae level in the tank. It sustains the snail population. Too much food availability can cause diseases in the nerites. Similarly, too little algae can starve the Nerites to death.
  • Remember, different types of Nerite snails prefer different types of algae. Always match the snail species with their preferred algae. In this way, they lead to better grazing.


What are the favorite nerite snails tank mates?

The favorite nerite snails’ tank mates are kuhli loaches, otocinclus, cory catfish, bettas, gouramis, neon tetras, barbs, and guppies. These mates make a peaceful and friendly environment with Nerite snails in the tank.

Can nerite snails live in a 1-gallon tank

It depends on their side. Smallest or tiny nerite snails can live in nano tanks.

What’s the diet of a Nerite snail in the aquarium?

The diet of a Nerite snail in the aquarium includes hair algae, black beard algae, brown algae, green dust algae, green spot algae, algae wafers, branched vegetables, and even plant leaves.

Are nerites hermaphrodites?

No, nerites have separate sexes. If you put a couple in the tank, then you’ll know whether they are male or female. There is no other way to distinguish their sex.

What’s the optimal pH range to keep Nerites in an aquarium?

The optimal pH range to keep the nerites in an aquarium is 7 to 8.


Although one Nerite snail needs 5 gallons of water to live in harmony, the temperature of the water is equally important. Keep in mind that the ideal temperature needed should range from 72 to 78 degrees Fahrenheit. Also, ensure stable parameters for the pH and hardness of the water to support a healthy snail population.

I hope you enjoyed reading about little crawlers. If you are facing any issues regarding the maintenance of nerites in a tank, share them with me. I would be happy to help you out!