During winter, I keep a few groups of fish in the house, to make sure they go on breeding and to collect eggs often. The room is heated to some 15 degrees, and receives sun in the winter afternoons. In spring, by the end of April, the fish go into the garden again, or they are replaced by a bunch of more exotic ones. Here a male A. gymnoventris “Castillos” which lives in a group of some six adults. They eat well and produce eggs well. This male is some eight months old.