I had 12 Neons in my 29gal tank, along with some Guppies, 3 Silver Dollars, 2 platies, a 3" Pelco, and a 3" Synodontis Cat, not counting it's whiskers, (I believe it's a Synodontis...my wife got it at Walmart as a present...It's sleek/long...Silver with black "Cheetah" spots, and two very, very, long, white whiskers.) Anyway, lately I noticed that a few of my Neons are missing...Now I had these Neons since June, and the Pelco and Cat since about August. Today I was looking and I'm missing 6 Neons...No dead fish anywhere...everyone is healthy and swimming around. Even have a few Guppies babies that must had drop from a Mom. My Cat stays inside a log decoration during the day, only comes out at night mostly. When he is out, he does what a Cat normally does...working his way through the gravel and swimming up & down the sides of my aquarium. My Pelco, just does his Pelco stuff. Never seen either one of those two chasing other fish. The only other fish I was wondering about was my Silver Dollars, but again, never seen them chasing or nipping at any of the other fish. Not even the Guppies flowing tails. Oh, I do have a pair of Mollies too. My Neons are pretty good size for a common Neon, still smaller then a mature Cardinal Neon. Any thoughts would be greatly appreciated. Thanks, Ghpr1957 Oh, yeah, about a month ago I had a small 2" Chinese Algae Eater disappear...No body ever found!