Currently have 5 nannacara anomalas (holding for a friend till he knows WTH he is going to do with them). 2 males and 3 females. Not breeding yet. They are aggressive little funks. Killed a few guppies and ottos, I had with them as dithers and cleaners. But now they are with 2 female paradise fishes, 1 corycat, and 1 Bushy nose pleco. Zero deaths. They chase each other away from their little corners of the tank.