Re: NANFA-- Elassoma

R. W. Wolff (
Thu, 6 Jun 2002 00:34:14 -0500

I have had this happen on occassion, the skewed sex ratios that is.
Killifish have been watched in this regard, and no concrete reason for this
happening. Some is attributed to temps, pH, and many other things or a
combination of things. No real reason has been set. One possibility in my
opinion is these fish develop quite early, often fully colored up at less
than a half inch. It is possible the males are atleast bullying the females
and they waste away, or worse yet killing them. Elassoma are generally
peaceful, but I have had locations where the males are relentless and loose
many females to this. The bacteria could be secondary or unrelated to the
problem of low number of females. If females are dieing out unnoticed they
would add to the waste load in an aquarium as well.
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