Re: NANFA-- Pike could devastate fisheries (article)

Christopher Scharpf (
Fri, 07 Feb 2003 21:23:48 -0400

> I've been thinking about fish-eating fish and why there aren't
> many in western US and Canadian freshwater habitats.

Is this because it's a depauperate fish fauna to begin with?

> We have lots and lots of birds here that eat fish-- herons, cormorants,
> mergansers, terns, several species of kingfisher, eagles, and more-- but few
> fish that eat fish.

Maybe that's why -- because there aren't enough fish to feed birds *and*
other fish (and bears).

> I'm also wondering a few things about the threat of the northern pike in
> Lake Davis:
> Is it really a threat to the endangered salmonids or is it a threat to
> lucrative fisheries there?

According to Moyle's *Inland Fishes of California" (2nd ed.), pike in Davis
Reservoir are a potential hazard to salmon populations.

Chris Scharpf
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