I rescued 2 catfish from a local pizza parlor today. They didn't have filtration, lights, airpump, or anything, and they were fed flakes. I got home and looked up what type they could be and it looks like Iridescent Catfish. So Now they've been moved into a 55 tank by themselves until I can find a good home for them. I am considering putting them in my 125 with my O's though after a week or so. I do realize that these fish require huge tanks, but they were in a 35 gallon fish bowl, and I really wanted to get the out of it.