Hey,
I agree that they are very easy to keep and not very expensive, around here anyway. They eat just about anything. I have a Bangaii Cardinal that scarfs down brine shrimp and Formula One.
Dan'l
i have 1 in my 55 along with other fish & stuff, and hes always in front and very curious, not scared of poeple, eats everthing, ive had him for about a year with no health probs.