Quote:
Originally Posted by Myka
...For example, Dwarf Angelfish change sex, but only when about 1 to 1 1/2" long, after that their sex is fixed even if there is a shortage of the opposite sex in the breeding grounds they cannot change. Clownfish can change from male to female at any point in their lives, but once they before a female they can never go back to being a male...
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Off topic but...
There are reports of angelfish in the Genicanthus genus can change from male to female. Of course you can argue that Genicanthus angels are not really dwarf angels. The reason this sex change is easily observed in Genicanthus angelfish is because male and female usually have different patterns and colors.
Also all clowns born with no sex (or with both sexes?) They will change to one or the other later on depending on the pecking order.