Dj1ford
Aquarium Advice Apprentice
I have 12 neon tetras and have had them for about 3 months in a 240 litre (approx 50 gallons) and they have started attacking each other nipping off fins and mouths. I have saved one which has only half it's mouth left by putting him in with my fry tank a couple have had half there tail fins removed and others are showing damage around mouths and fins, can anyone explain this behaviour as I thought these were peaceful shoaling fish.