RE: NANFA-- Freckled Madtom observations

Denkhaus, Robert (DenkhaR_at_Ci.Fort-Worth.TX.US)
Sun, 13 Jan 2002 09:37:37 -0600

The idea that this behavior is more common in adults than in juveniles could
mean that my techniques for looking for adult madtoms down among the
detritus and other substrate materials may be all wrong. Maybe I should be
hitting higher up in the vegetation! So, vertically speaking, where does
everyone find their madtoms? The young of the year that I have been rearing
all originally came from out of a dense layer of decaying cottonwood,
sycamore, and oak leaves in about a foot of water. No submerged or emergent
vegetation was present. As I think about this though I remember catching a
few adults years ago amongst a dense stand of lotus while trying to catch
dragonfly nymphs.

Rob Denkhaus
Fort Worth Nature Center & Refuge

> -----Original Message-----
> From: Edward Venn
> Sent: Saturday, January 12, 2002 10:54 PM
> To:
> Subject: Re: NANFA-- Freckled Madtom observations
> Bruce,
> Is this found only in adults or do juveniles exhibit the same
> behaviour?
> Could this behaviour related to the onset of breeding as in
> the catfish
> found in Japan?
> >
> >Rob, I've had the same behavior from my tadpole madtoms.
> The more dense
> >the
> >foliage, the more likely for them to exhibit this behavior.
> If you have
> >both
> >bottom cover & a dense growth of plants, madtoms will occupy both.
> >
> >Bruce Scott
> >Meridian, Idaho

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