They are Central American so wouldnt work, plus they are more aggressive than G. labiatus. But they would work if thats what you want for your 55g instead of the labiatus.
Can be very nasty, and the males get big enough to clear out a 55g (kill everything inside). I have a 4" female that chased three 6" electric blue jack dempseys and three 6" clown loach into the far corner of a 75 and wouldn't let them out.what about a salvini