--Bruce Stallsmith
the grey, rainy Tennessee
Huntsville, AL, US of A
>From: Jerry Baker <nanfa-in-bakerweb.biz>
>Reply-To: nanfa-l-in-nanfa.org
>To: nanfa-l-in-nanfa.org
>Subject: Re: NANFA-L-- central mudminnow gravel consumption
>Date: Thu, 15 Dec 2005 13:43:08 -0800
>
>SHasloue-in-kdhe.state.ks.us wrote:
>>I don't know how one could tell if fish "perceive" colors as we do, but
>>they darn sure perceive color in some fashion.
>>
>>If not - many species of darters, reef fish, and fishing lure
>>manufacturers
>>are going to a lot of trouble for nothing!
>
>I'm not sure I understand why the coloration of fish implies their ability
>to see color. Humans absorb different frequencies of ultraviolet light to
>different degrees (as can be seen in UV photographs of human skin) and yet
>we cannot perceive it whatsoever. I'm sure that a bee can see that we have
>a certain "color" in UV light, but the bee would be wrong if he assumed
>that we could see that color.
>
>Not trying to be difficult, but just pointing out that we cannot infer the
>ability to differentiate colors on the basis of coloration.
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