David L. McNeely, Ph.D., Professor of Biology
Langston University; P.O. Box 1500
Langston, OK 73050; email: dlmcneely-in-lunet.edu
telephone: (405) 466-6025; fax: 405) 466-3307
home page http://www.lunet.edu/mcneely/index.htm
"Where are we going?" "I don't know, are we there yet?"
----- Original Message -----
From: "Johnson, Daniel (DanJohnson)" <DanJohnson-in-chevron.com>
Date: Thursday, June 8, 2006 10:01 am
Subject: RE: NANFA-L-- Bullhead, black or yellow?
> Dave,
>
> This specimen has been in clear aquarium water for a couple of months
> now. It has darkened up
> quite a bit in this time. Have you noticed that yellow bullheads
> don'tget as dark when kept
> in the same conditions?
>
> --Dan
>
> -----Original Message-----
> From: owner-nanfa-l-in-nanfa.org [owner-nanfa-l-in-nanfa.org] On
> BehalfOf dlmcneely-in-lunet.edu
> Sent: Thursday, June 08, 2006 8:23 AM
> To: nanfa-l-in-nanfa.org
> Subject: Re: NANFA-L-- Bullhead, black or yellow?
>
>
> Dan, the barbel pigmentation and the ray count are consistent
> throughout the range of these two species. Not common does not
> mean
> does not occur. The fish pictured is a black bullhead, and btw,
> appears to have been living in fairly clear water, given the
> intensity
> of the pigmentation. Bullheads of either of these species from
> turbid
> water are typically green and show some yellow color. I've
> collected
> black bullheads that were much more easily confused with yellow
> bullheads than the one you have, but that after a few days in an
> aquarium turned quite dark like the one pictured.
>
> Dave
>
> David L. McNeely, Ph.D., Professor of Biology
> Langston University; P.O. Box 1500
> Langston, OK 73050; email: dlmcneely-in-lunet.edu
> telephone: (405) 466-6025; fax: 405) 466-3307
> home page http://www.lunet.edu/mcneely/index.htm
>
> "Where are we going?" "I don't know, are we there yet?"
>
> ----- Original Message -----
> From: Dan Johnson <danjohns-in-io.com>
> Date: Thursday, June 8, 2006 7:58 am
> Subject: NANFA-L-- Bullhead, black or yellow?
> > Here's a photo of a bullhead. The black chin barbels and anal ray
> > countpoint to black bullhead, but
> > black bullheads are unusual in the Houston area. What do you
think,
> > black or yellow? Thanks in advance!
> >
> > http://www.io.com/~danjohns/fish/bullhead.jpg
> > /----------------------------------------------------------------
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> / Association (NANFA). Comments made on this list do not necessarily
> / reflect the beliefs or goals of NANFA. For more information
> about NANFA,
> / visit http://www.nanfa.org Please make sure all posts to nanfa-l
are
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/ This is the discussion list of the North American Native Fishes
/ Association (NANFA). Comments made on this list do not necessarily
/ reflect the beliefs or goals of NANFA. For more information about NANFA,
/ visit http://www.nanfa.org Please make sure all posts to nanfa-l are
/ consistent with the guidelines as per
/ http://www.nanfa.org/guidelines.shtml To subscribe, unsubscribe, or get
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