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mthennet <mthennet at netrix_com>: NANFA-- Incorrect Identification

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From: mthennet <mthennet at netrix_com>
To: NANFA CHAT ROOM <nanfa at aquaria_net>
Subject: NANFA-- Incorrect Identification
Date: Wed, 23 Jul 97 11:09:00 edt
Message-ID: <33D61F33 at pcgateway_netrix.com>

Good day all,

I would like to apologize for my incorrect identification of the 1"
trooper I collected at Sycolin Run, Loudon County, VA  last Sunday the

He was initially identified as a Mottled Sculpin (Cottus bairdi) but
further observation in aquaria I believe the fish to be a Potomac Sculpin

(Cottus girardi).

Reasons for this revised ID are the fact that the dorsal fins are
not joined at the base as they are with the Mottled Sculpin.  The lateral

line appears to be incomplete and the mottled chin appears to have only
pore as opposed to two.   I suspect that these traits identified in the 
Cottus juveniles remain with the fish to adulthood?

>From what I understand the different species can be identified easier by
teeth and  the development of their prickles and spines but I am an
and not a scientist.  That may explain my use of a magnifying glass as 
opposed to a microscope.

Generally speaking, the Genus Cottus seems to be one tough cookie to 
identify properly.


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