These monster western dams have modified the habitat to the liking of
introduced species like catfishes and other warmwater species. Now these
introduced fishes are feeding on the young of the now rare large minnow and
sucker natives (like the Colorado pikeminnow, bonytail and razorback
sucker). And the adults of these minnows and suckers which evolved in the
torrential flow of the Colorado river no longer have the conditions
necessary to reproduce in large numbers. You can learn more at the web page
on the Upper Colorado River Endangered Fish Recovery Program at
http://www.r6.fws.gov/coloradoriver/index.htm. I notice that site is down
at this time however.
-- Jay DeLong Olympia, WA
/----------------------------------------------------------------------------- /"Unless stated otherwise, comments made on this list do not necessarily / reflect the beliefs or goals of the North American Native Fishes / Association" / 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 / subscribe, unsubscribe, or help in the body (not subject) of an email to / nanfa-request_at_aquaria.net. For a digest version, send the command to / nanfa-digest-request_at_aquaria.net instead. / For more information about NANFA, visit our web page, http://www.nanfa.org