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Tridacna maxima clam


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It's not aposematic, blue looks black with much of any depth in the ocean. The majority of wild specimens are colored in tans and browns but are still quite pretty. Aquarium specimens are farmed for the better colors that are actually from the color of the algae in their tissues. It's not genetic, they can influence the colors by which color adult clam they grind up to give the veliger clams zooanthellae starts.

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Hi Peter,

The depth depends on the clarity of the water but they are generally found from 4-30 feet.


The stripes and spots are probably the clam itself although the algae in different areas would be different.


Veliger is a free swimming larval stage after the trochophore.

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