redruckus
Aquarium Advice Freak
ive had 3 pirahnas for a few years now i have recently moved the tank and have been feeding them a all beef toung diet for about 2 months now because i couldnt get feed goldfish any more and today when i went down to feed them they were all very dark usualy ther bottom fin is red and the belly is red most of the way back but one of them had a little patch of red in the front and was very dark even the tail was darker then usual and the other ones looked alot darker as well but that was the darkest one. what would cause this to happen i have recently put a few java ferns into the tank and some marimo and started using a low dose of flourish would any of this affect how dark the fishes colour is? or is it just they are realy healthy?