Questions about A. cacatuoides

[Sarah LeGates <slegates@yahoo.com>]

Hey all,

My fabulous LFS (Albany Aquarium, in Albany, CA) has recently brought
in a LOT of A. cacatuoides.  I picked up 5 (for $25!, wonderfully)
this weekend and put them in a heavily planted 35 hex.  This tank is
tall, and I'm wondering if its footprint is large enough to support
the two males and three females that I think I have.  These are
wild-type cacatuoides, possibly even wild caught although I didn't
ask. I'm basing the M/F ratio on red ocelli on the upper margin of
the caudal fin of the "males"; these fish are approximately 1 1/4"
SL, and also have 2-3 elongated spines at the leading edge of their
dorsal fins.  The "females" are smaller (<1" SL), heavily marked in
black and showing a lot of yellow in the ventral area.  They do not
have the red ocelli of the males.  Are these fish large enough to be
sexed, and am I using the appropriate characteristics to sex them? 
I'm already seeing territoriality between the females, and I don't
want a war to erupt when pairing takes place.

Thanks,

Sarah LeGates

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