NANFA-- Elassoma

Pete Liptrot (
Wed, 5 Jun 2002 23:47:08 +0100

I wonder if anyone on the list can help. Couple of problems with E.
Got some about 4 years ago from a commercial source, they bred like mad but
after a few generations they were pretty well all male.
I let these go to other people anyway, because a friend brought some wild
collected fish over and it seemed more sense to concentrate on these.
They did great for about 18 months, breeding away, but I'm now finding that
these are also giving out a preponderance of males, and a further problem is
that they appear to have a problem that manifests itself in a golden pigment
to the dorsal musculature, which may also become swollen.
Death rates are above what I'd expect with fairly young mature fish.
I'm concerned that this is Mycobacteriosis, possibly exacerbated by
inbreeding depression, but I'd welcome any thoughts.
Have people found that sex ratios are dependent on pH as with some other
fish, or are there any other parameters that can have an effect here?
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