i got a new piranha today around 4-6inches, and its not moving it just sits there. It moves every once in a while but only goes up to about 5-6 inches and then comes down like its sinking. Does anybody have any advice?
If it's a red belly you should get more than 4 so they school up. I thnik that just sitting there is normal for a pirahna. I have had many....and they really don't do much if they aren't eating.