I've had freshwater aquariums since I was 13 years old. Currently I have one 55 gallon filled with Endler's Livebearers and Endler's hybrids, feeder, semi-fancy, fancy guppies= babies are "Homemade Beauties", different varieties of homemade"strains" of swordtails, a few weird colored platy hybrids, a bottom feeding catfish, a ghost shrimp, a gold snail, some small brown snails, and alot of plants. My children and my sisters/brothers have asked me a few times before why don't I get some large fish. My reply to them was " I would rather look at alot of pretty little fish that reproduce their own, than to have a few large fish that I would need to keep spending money each week on fish for the large fish to eat". Large fish are, in my eyes, too expensive feed wise, for my taste, and I would get tired of watching the same large fish day in and day out. In my aquarium, the few babies that survive to adulthood are very lucky and very quick not to get eaten by any of the adults, then I cull all baby males that aren't the prettiest of the bunch, and I keep all baby females that also survive not being eaten. I've had neighbors, co-workers, my boss, friends, family, and my children's friends all tell me I've got guppies, swordtails, and platies that are way prettier than the ones they see for sale as "Fancy" in the pet stores. Some people also tell me that I should sell my babies for money, then I ask them how much, 10 cents a dozen? I have to let them know that my fish would only make it to the feeder tanks, because I'm not a big time breeder of "Fancy" or "Purebred" fish. I do enjoy my small fish very much, knowing that I probably have "one of a kind" strains in my aquarium.