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Originally Posted by Bogie  Keep an eye on them. The larger of the 2 clownfish will be the female, and she will be the more dominant one. If they are less than 1-1/2 inches, they may not have even developed yet. Most will start as males, and the larger/dominant one will develop into the female. The only big problem you'd have is if both were already females, because I don't think they change back. In that case, they might be fighting for territory. | Correct. Once a female, always a female. Clownfish start as juveniles, then progress "up the chain" to male. If no females are present, the most dominant male will become a female, then one juvenile will change into a male to replace the male (unless there is already another male in the harem). So at any one time, you can have a female, a male, and the rest are juveniles. That's how it should work. Now, if you get them when they are larger, then you can end up with two females, as each one could have come from a separate tank (or two different clown harems). That's when problems occur. This is also why you can keep more than 2 clowns in a tank (provided they are all juveniles when you get them). In this case, all but two of them will remain as juveniles forever, unless the male or female dies. Then everyone will shift up a spot, filling in for the missing male/female.
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38 Gallon (restarted 6-14-08 ). 30lbs LR, 40lbs LS, 10g sump/fuge with Caulerpa and Mangroves, Current 4x39w T5HO lighting, 2 Koralia #1, AquaC Remora. 2 small colonies of polyps, Cleanup crew (50 Dwarf Ceriths, 16 Florida Ceriths, 10 Nassarius Vibex, 14 Blue-leg Hermits, 1 Limpet).
20 Gallon. 15lbs LR, 20lbs Crushed Coral (replacing with LS), 65w Current PC lighting, SeaClone 100 (replacing with a Remora), Skilter 250, 2 Powersweep 212's. | 
