Pirahnas Question 

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miker7

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I bought 5 red belly pirahnas at the same time, only 3 are growing why?
Do They eat their own?
 

Elodea

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Welcome to Fishlore!

Are they in the 20 gallon in your aquarium info? Then they aren't growing because the tank is very overstocked. 1 pirahna grows huge and needs a 55 gallon tank minimum, 5 need a 180 gallon tank or so. Here's the care sheet for them: https://www.fishlore.com/Profiles-Piranha.htm

I suggest you hurry and either rehome them to a larger aquarium or give them away, as a 20 gallon tank is far too small.

Do you know about the nitrogen cycle? Click this link, it is important reading. Also, may I ask if your tank is cycled? This water chemistry is essential to success in fishkeeping.

Good luck with the piranhas!
 

Elodea

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White algae? Is it growing on the glass or on the piranhas?
 
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