Hi everyone, I'm a newbie to the acquarium world, since purchasing a 10 gal tank with some guppies and platties for my 85 yr old mother to enjoy. We are both getting a kick out of watching these fish and then we had a population explosion. So. . . now I set up another 10 gal tank and separated the platties into their own tank. I think we must have over 100 babies in the guppy tank. Now for the problem, I bought 2 plecostamus (sp?) and put one in each tank. The tanks have covers but both of the plecos(is this what people are referring to) have disappeared - I mean they are gone, no trace of them at all. Is it possible they died and the other fish ate them in 1 day? Thanks for any help as I am baffled.