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First Photo of an Adult Cobalt Slender Grouper Proves It (Sometimes) Keeps Its Blue Hue

by Joe Rowlett | May 17, 2016 | Fish

The Cobalt Slender Grouper (Epinephelus leucogrammicus) is an exceedingly rare and beautiful fish known only from the Red Sea. Rarely collected for the aquarium trade, specimens often fetch thousands of dollars when they are made available.…

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