Amblyeleotris diagonalis

This goby is common on Okinawa , usually seen in 66 ft / 20m at Sunabe and in 115 ft / 35m at Maeda.
Though it's a sober fish,its portrait is unique.
It has a thin brown line on both cheek.
Other Amblyeleotris gobies don't have the line.
I don't know whether the line gives any advantage against others or not.

 depth : 52ft / 16m
Sakimotobu-ESSO oki , Okinawa I. , Japan
26 Dec 1998

 
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