I would like to get some opinions on some fish for this tank that is going together soon the parameters of this selection are I need to pick four fish one has to be a clown ( I have a three year old that will lose here mind if we don't have nemo lol) the other three need to be compatible with the clown, a Pom Pom crab possible two, and a harlequin shrimp. Any suggestions would be greatly appreciated