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Re: Sexing young A. borelli (Newbie question)


At 1" it can be hard to tell the sexes apart,
however females rarely have a lot of iridescent
head markings. It looks like you have the same
problem many people have found with commercially
produced A. borellii. The sad truth of the matter
is that most A. borellii being sold through
commercial sources are males. I suspect that the
breeders are spawned at temperature above 82F
(28 C) and producing mostly males. What females
are produced are probably held back for future
breeders. If you really want some females your
best bet is to buy from hobbyist/breeders.
Shipping can make this rather expensive, however.
Otherwise I'd suggest buying the smallest
specimens in the tank and hoping some will become

A 75 gallon tank can easily handle several
different species of apistos as long as there are
a lot of places to hide and build territories. If
the tank is properly landscaped, I doubt you would
have many problems mixing A. macmasteri, A.
cacatuoides or any apisto with your A. borellii.
Just remember that a full grown male Mac will be
nearly twice the size of full grown A. borellii.

Mike Wise

Tomoko Schum wrote:

> I hope someone can help me determine the sex of
> the young A. borelli I purchased about a week
> and a half ago. Both fish are about an inch long
> and looking very healthy.  One of them is much
> darker than the other one, but otherwise they
> are identical.  They both have the iridescent
> blue markings on their heads and dark gray
> suborbital stripes, lateral bands, vertical bars
> and caudal spots.  The body color of the darker
> one is light greenish tan with bright iridescent
> blue specs (its head looks almost purplish on
> occasion).  The light colored one is light
> bluish gray with much lighter head markings and
> body speckles.  The darker one is more dominant
> and sometimes chases the lighter one away from
> his small territory. They live in a 75 gallon
> tank.  I would like to add more Apisto in the
> tank.  I can get more borelli from LFS to have a
> small harem, but LFS or I can not tell their
> sex.
> LFS has also macmasteri on hand and on a rare
> occasion some cacatuoides. (Then again I have
> the same sexing problem.)  Can I have two
> different species share the tank? TIA, Tomoko
> SchumMadison, Alabamatomokoschum@earthlink.net

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