Out of the fish I kept, Neoheterandria elegans dropped 1-3 young every day. But that doesn't really help you if you want to know about a specific species. It does sound like your friend is talking about livebearers in a bare tank.
Out of the fish I kept, Neoheterandria elegans dropped 1-3 young every day. But that doesn't really help you if you want to know about a specific species. It does sound like your friend is talking about livebearers in a bare tank.
It's probably because they're not "pretty" enough. The fry have a very low survival rate as well, without special feeding or a tank full of tiny live animals, because they're born not that much larger than a lot of the smaller egg laying fish hatch at.