What Should I Get?

[Tito2491]

I have a 37 Gallon tank that is full of live rock from top to bottom
I currently have these fishes

Tomato clown 1.5''
Royal gramma 2''
Flame cardinal 3'' ( only comes out at night , hides behind the rocks)

what should I get? I want a very active fish , any thoughts

also my sand bed gets alot of algae fast what can I get to clean it ?

Thanks in Advanced

 

[StripesTheEel]

a sleeper goby will help sift through the sand..

as far as active fish go.. if you want something that will sit out the front of a tank i'd recommend a firefish..

 

[MaryPa]

Afirefish and the gamma might fish,they`re too simular in shape. I honestly think your tank is stocked to it`s limit,BTMO.