they pretty much look like guppies.As for convicts you need to feed very young fry
as the dorsal fin has stiff spines if swllowed the wrong way the can lodge in the bichirs throat(not good).Guppies and other livebearers lack these.As for buying quantities of hundreds then crowding them into a tank you haven't adressed the raising your own you are simply QT'ing them.Get a cpl dozen guppies feed them well
and you should be butt high in them in a cpl of months-Anne
