I was wondering if I could mix a red tailed shark with clown loaches and angel fish in a 55 gallon tank, there are currently 2 angel fish (breeding pair) 2 clown loaches and some other fish I would trade in if I got one. I have read that they might be aggressive and I don't want my wonderful little clown loaches hurt or anything! Oh, and if I could mix a red tailed shark in with them does anyone have other stocking options/other fish that would do well in the tank? Thank you for the advice!