08-25-2008, 08:04 AM
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I agree with batman- there are some really, really cool cichlids that would fit in a 30G. Personally, I'd recommend a dwarf pike. They're evil, but so interactive. My friend's starts pacing like a dog when he sees his bag of food come out and plays "fetch" with me when I throw his food in. He catches it wherever I throw it in the tank. Of course, he doesn't bring it back :P
He'll also eat out of my hand (although I'm very careful, they have sharp teeth) and even let me pet him if he's in a good mood (although I don't really recommend this as it's not good for their slime coat).
Oscars are a very popular fish, but there's lots of cool cichs that are less well known but just as cool looking and intelligent.