What would be the best thing for my tank?

[longdrinkofwater31]

I have a 7 gallon tank with a damsel and a clown fish. A turbo crab and two blue legged crabs. I also have a pretty good sized live rock in there but nothing on it. What would be a good coral to put on it. I am really looking for something that is bright. Thanks.

 

[Navarre]

Zooanthids or some other form of Mushroom polyp.
Perhaps Starpolyps.
You dont want anything that grows too large as the tank is already too small for the fish

 

[Ed4567]

Green star polyps maybe.
Also I would look to remove at least one of the fish or upgrade to a slightly bigger tank.

 

[KimPossible]

Pulsing Xenia's are real nice.. though they are fast propagators and require "weeding out".