mardarin in a 20gal?

[Bob I]

I would advise against trying it. Mandarins usually don't eat prepared foods. They tend to live on things they find on live rock. Therefore it takes a lot of Live Rock to keep a Mandarin fed. You can't put enough lr in a 20 gallon tank to sustain a mandarin. Having said that I am sure some would argue that their Mandarin eats frozen food. I agree that some do, but it is the exception rather rhan the rule.