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Re: KillieTalk Digest V3 #1273
> In this case, perhaps bright colors and finnage may increase
> vulnerability to predators, but it may also turn out that there aren't
> important predators, or that the predators are mostly color blind (like
> many frogs that sense motion rather than color) . We can speculate
> reasonably about mechanisms (i.e. fast growing fish become male) without
> having to speculate why such a mechanism may have evolved.
>
While listening to a talk by Barry Cooper a few months ago on his
collecting trips to Africa, somebody asked him if he thought that the
bright colors had to do with the clarity of the water. They were
hypothesizing that their bright colors might help them attract mates in
very muddy water. Barry pointed out his observation that most fish which
were collected from muddy waters actually had muted colors and the fish
from clear water had more intense colors.
BTW- That is all paraphrasing from memory and in no way should be used
as scientific data unless confirmed with Barry or Brian :-)
Jeremy
--
~~~~~~~~~~~~~My Life Story~~~~~~~~~~~~~~~~
Jeremy Adams - Corvallis, Oregon USA
Killifish-Frogs-Toads-Aquatic Plants-Fish Ponds
Bombina orientalis web page:
<http://members.home.net/killifish/bombina.html>
Loyal Macintosh user since 1988
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