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I have a 20 gallon (long) planted tank with 8 serpae tetra and 3 otos. I was wanting to add a cockatoo cichlid but the only website I found sells them as a pair. As far as tank size and stocking goes, would this be ok?
Serpae tetras get pretty nippy and the male cockatoo will have some nice flowing fins, so that's something to watch. Also serpae spend alot of their swimming bottom to mid sections of the tank... Same as the cockatoos.