Coryphopterus personatus, commonly referred to as the masked goby, is a marine species of goby found in the western-central Atlantic Ocean.Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p
C. personatus is a cryptobenthic species, living in caves and shaded areas near the sea floor in reef communities. Masked gobies are sequential hermaphrodites and are capable of changing sexes.
Description This species reaches a maximum length of . This species is difficult to differentiate from the closely related C. hyalinus. C. personatus has a dark "mask" on its face, a faint dusky stripe on the lower rear margin of the body, and a translucent patch on the center of the top of its head. C. personatus is also slightly larger than C. hyalinus, which only reaches 3 cm (1.2 in).
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