Red may be seen underwater

DWhatley

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#1
It seems that cephs are not the only ones who may use light as a communications method. The month's Practical Fish Keeping has an article that reports potential use of red light by fish to communicate.
 

Neogonodactylus

Haliphron Atlanticus
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#2
This is not that surprising. Many organisms fluoresce in the red. There are several stomatopods that live below 30 m that flouresce in the red as do many coralline algae, sponges, and corals.

Roy
 

DWhatley

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#3
Roy,
Does that mean that fish "not seeing red" is now an old theory and no longer considered true or is it that red is still a unique color to the underwater spectrum but that numerous fish/inverts utilize its absence to communicate?
 

monty

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#5
This is my favorite paper from the "blue is the norm, red is the exception" camp:

http://www.ncbi.nlm.nih.gov/pubmed/15366767

Unfortunately, that's just the abstract. I am a believer that fair use allows redistribution of the PDF for nonprofit educational purposes, however. :read:
 

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