Try the crayfish page at http://bioag.byu.edu/mlbean/crayfish/crayhome.htm
you then should be able to identify by picture and description
Ron
-> -----Original Message-----
-> From: owner-nanfa_at_aquaria.net On Behalf
-> Of DaveCyndy_at_aol.com
-> Sent: Sunday, January 02, 2000 12:14 AM
-> To: nanfa_at_aquaria.net
-> Subject: NANFA-- Crayfish ID
->
->
-> Hello all,
-> My roomate has a tank with a 6" smallmouth, 5 or 6 crayfish, and several
-> hellgramites. One of the crayfish is completely different than
-> any I have
-> collected or kept. It was collected from Catoctin Creek in
-> Frederick Co.,
-> MD(as are all the others). The crayfish is about 4" long and a
-> deep, uniform
-> blue color. The large claws are more slender and sharper the the other
-> crayfish I have collected and kept.
->
-> His behavior is completely different also. He never seeks cover. All
-> crayfish that I have kept excavate holes under rocks or utilize
-> crevices in
-> rock piles and only spend time out in the open when there is
-> food present.
-> This crayfish has staked out a spot on top of a large rock in
-> the center of
-> the tank and defends it against everything. It has completely
-> intimidated
-> all the other inhabitants of the tank including the smallmouth. This
-> crayfish also is extremely predatory. As soon as feeder minnows
-> are put into
-> the tank, it begins stalking them. When it creeps close enough
-> it jumps at
-> the minnows. The success rate of this technique is very low but
-> it will not
-> quit. It eventually catches a minnow everytime. The other crayfish
-> completly ignore the minnows.
->
-> Any help identifing this guy would be greatly appreciated.
-> Thanks
-> DAVE HOUGH
->
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/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
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/ This is the discussion list of the North American Native Fishes Association
/ nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word
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/ nanfa-request_at_aquaria.net. For a digest version, send the command to
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/ For more information about NANFA, visit our web page, http://www.nanfa.org