Re: NANFA-L-- Annoying malady

Mysteryman (
Tue, 13 Jun 2006 08:21:42 -0500

----- Original Message -----
From: "Bruce Stallsmith" <>
To: <>
Sent: Tuesday, June 13, 2006 7:33 AM
Subject: RE: NANFA-L-- Annoying malady

> Immunologically, your description makes sense, Chip. Testosterone is a
> strong immunosuppresant, and testosterone levels increase dramatically
> during spawning season for both males and females in most fish species. In
> that weakened state they may have become susceptible to infection. This
> could explain why your other sunfish were unaffected.
> --Bruce Stallsmith

Well, whaddyaknow? That just might explain it. My shiners have been
spawning, but not my sunfishes or Pygmy suns or any other fish. The opposite
is true for Chip's fish. ( sort of )
Okay, assuming that's part of the problem, all I gotta do now is figure out
what the disease that normally lies dormant is and elimnate it, lest I keep
having this problem with every spawn. Those Burrheads I mentioned having
this last year? Guess what-- it hit after they spawned, which I had simply
chalked up to the "spawn & die" habit of many fishes.

Well, it's not great news, but it's-in-least something to go on, I guess.
Thanks, Bruce! I suppose I could try keeping them in conditions which aren't
conducive to spawning to see if that helps, but I suppose I'm probably going
to wind up having to just tear down, sterilize, and restart everything,
since spawning is kinda the whole point.
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