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How Many Neon Tetras In A 5-Gallon Tank? Honest Answers!

For small fish like neon tetras, we can follow the “one inch per gallon” rule. So, my calculations say that you can add 3 neon tetras in a 5-gallon tank. However, I’d recommend against it. Tetras are schooling fish that at least need to be in a group of 6 to be comfortable. 

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How Many Tetras In A 3-Gallon Tank? Will Small Tank Stunt Growth?

We can use the ‘one inch per gallon’ rule for small fish that don’t grow over 3 inches long. So, going by the formula, the ideal number of tetras in a 3-gallon tank is 2-4. You can add 2 neon tetras that grow around 1.5 inches long. As for small ones like ember tetras, you can add 4. 

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How Many Neon Tetras In A 10-Gallon Tank? With Bettas And Guppies?

Neon tetras are schooling fish. If you keep several of them in a small tank, they will just hoover at one spot. So, we’d recommend not adding any more than 6 neon tetras in a 10-gallon tank. If you really know your way around ‘overstocking,’ you can get away with keeping 7-8.

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