Calcium metabolism in acellular bone fish

[tivol at tethys.ph.albany.edu]

Andrew Saul asks about vitamin D and UV light in fish.
	I doubt that UV irradiation plays a role in fish due to the very short
distance before UV is absorbed by water.  Since other wavelengths are also
rapidly attenuated, I doubt whether any light-requiring processes would occur
except possibly in those fish right at the water surface.
					Yours,
					Bill Tivol