Help me please :(

Im the one with 21 gallon saltwater tank i have now 2 ocellaris clownfish they are small babies and i have 1 black urchin and 2 crabs but i want to add one more fish Clown Goby(Gobiodon citrinus) can i keep this fish in my fowlr? does it need to have corals in my tank? to rest on? cause i don't have any corals i have been searching a lot for this but i can't find anything

 

No a goby don't need corals to rest on. But only having a 21 gallon tank with 2 clowns you are already well past fully stocked. One clown should be in at least 30 gallons of water.

 

http://www.3reef.com/forums/general-reef-topics/stocking-21-gallon-151795.html#.UtKnP7R2DIU

IMO you can add the Citron/Clown goby.

No you do not need corals at all, the tank and it's inhabitants will be fine without coral.

 

I see no problem w adding the goby. I kept 2 clowns and a bi-colour blenny in a 21 for a couple years and ever had a problem with nitrates, -ites, etc..

 

If i didn't find this fish anywhere in my country can i add 1 cardinal fish with firefish?

 

I wouldn't add both. I'd add one or the other.

 

Dude you've already made two other threads about this, and I've already replied on one. 21 gallons is already too small for one Clownfish, let alone two.