CAC
Formerly: Catfish Are Cool
Depends on the diamensions really, but you could have a chaca chaca or two. Very aggressive fish when feeding. Check out some videos on youtube or something.
old threadDON'T GET AN OSCAR!!!!!!!!!!! Those things are beasts! Awesome if you have the room but they grow too big for a 15 gallon.
I made that mistake. I went to walmart and bought three of the things (because they were my first fish and they were a pretty muddy green with bright orange/red scales... I didn't now they could be cannibals) and put them in my ten gallon tank. It sounds like I'm making this up but I named them Mandy, Billy, and Grim off one of those cartoon network tv shows. First Billy and Mandy demolished grim. A week or so later Mandy ate Billy. I had Mandy for about a year after that, it got about 6 inches long and 4 inches tall. I moved it to a 29 gallon tank. The thing was still too big but nobody would buy it.
That thing did everything, got ick (my tank is still stained from the meds), jumped out of tank, attacked my mom when she was cleaning the tank (didn't hurt her, but she never would even lift the lid again), jumped out the water and hit the lid (making this really loud banging noise all hours of the night) so many times I had to tape the lid down, jumped out of the water under the filter so much that when it died it had a crater in its head from the side of the filter digging into its head and scarring up.
But it was always nice to me when I cleaned its tank. It was a really engaged fish too. Every time you walked near the tank, it would follow you or hover closest to where you were standing. It just got prettier and the shiny red color spread as it aged. If you want a predatory fish and ever have the room, I would defiantly suggest an Oscar because they won't disappoint when it comes to eating living things.