Hi Chuck, welcome to the boards first off.
I'm not really sure what exactly you are asking.....we have a 55 gallon tank with 3 tuxedo platys (one in the maternity tank at the moment), 1 red wag platy, 1 marigold swordtail (male), 1 lg red and black swordtail (male), 1 velvet sword (female), 5 black skirt tetras, 3 tiger barbs, 2 green barbs, 2 albino cory cats, 1 green cory cat, 1 lg. pleco, and 6 serpae tetras. We lost a couple of female swords.
The swords and platys are livebearers. As to the tetras, they are just that tetras. These are all tropical fish. We feed ours tropical fish flakes, freeze dried tubifex worms, and algae tabs (meant for the pleco but the platys, swords, corys and serpae's all seem to love them as well). As a treat we give them pieces of cucumber, romaine lettuce, and frozen brine shrimp. They all go wild over the brine shrimp!! I hope this answers your question as I am not sure except on the food exactly what kind of answer you are searching for.