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Re: bent spines/was Winter 1967
How about TB? or Calcium defiencncy? I remember having a lot of something
like this when I moved to Kula. We have very soft acid water and it has no
buffering. I added some crushed oyster shells. Seems some fish more
susceptible than others. Also may be exacerbated by too much rich food. I
seem to remember fancy guppies running into the same problems. Probably
were being raised in hard water then moved to my soft water in my home town
and then drooping back half.... How are you softening the water? Could it
be adding something that is making it difficult for the fish to get calcium?
----- Original Message -----
From: "Barry Cooper" <bjc3 at cornell_edu>
To: <killietalk at aka_org>
Sent: Monday, August 04, 2003 6:19 AM
Subject: Re: bent spines/was Winter 1967
> It will be too late to do anything to fix the problem in that particular
> batch. However, if you have had this stain for a while and haven't seen
> problem, and now the great majority of fry show it, it is, in my opinion,
> unlikely to be genetic. There are several potential causes for spinal
> deformitites. One is genetic, but see above; another is nutritional, in
> particular a deficiency of dietary vitamin C (ascorbate). If it is that,
> I'd be a little surprise, given the diet you describe, but it could be
> possible. Fish must have a dietary source of vit. C, like people, which
> comes from vegetable content in the diet. Remember, however, that aquatic
> invertebrates in the diet, like your Moena, if they are eating algae, will
> be gut loaded with vit. C. I guess that depends on how you are raising and
> feeding your Moena, how often you feed them, and so on. Next time you
> a batch, you might try feeding them grindal worms that have been fed good
> quality flake foods, or of course feeding the flake directly, if they'll
> eat it. All good quality flake food is supplemented with stabilized
> ascorbate. Finally, infections could cause this, although I doubt it would
> be at consistent anatomic sites as you describe.
> At 01:17 AM 8/4/2003 +0000, you wrote:
> >Tim Addis wrote:
> >>Bill, the message was innocent enough. Why it got bounced around is
> >>to me.
> >>Why does - 'Well done, keep it up' envoke an anti abuse program.
> >>Perhaps I'm innocent to the ways of the world.
> >Yeah, innocent as a newborn lamb....
> >Don't know if you're still up at this hour (Dave toddled off 2 hours ago)
> >but I've got a problem
> >with bent spines (angling downward at the caudal fin) of a growing out
> >batch of Ep sexfasciatus Rathkei.
> >All save 2, present this way. Regular water changes every 2 days at
> >and feeding BBS, moena, frozen chopped blood worms (when larger) and
> >earthworm flake. They are in a tank with filtered light thru a north
> >window. I've grown out several batches of Chromos with no problems and am
> >if I should have softened the water more, or is it just tired, worn-out
> >genes? Any ideas/thoughts are
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> Barry J. Cooper, Prof. Emeritus, Dept. Biomedical Sciences, Cornell
> Adjunct faculty, College of Veterinary Medicine, Oregon State University
> Home address: 27505 Riggs Hill Rd., Sweet Home, OR 97386
(bjc3 at cornell_edu)
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