Very special thanks for the first two photos of Coryphopterus urospilus to Dr. Ross Robertson, Australia, he has taken the photos at Mexico and Gorgona Island, Columbia.
This reef-associated species lives in sand-rubble fringe of rocky reefs or coral patches at depths of 2 to 40m (Allen and Robertson, 1994). According to Dominici-Arosemena and Wolff (2006), this species is present in edge habitats on sandy deep rocky zones in the Gulf of Chiriqui, Panama and is one of the most dominant species of gobiids. It forages on tiny crustaceans among rocks on the bottom.
Source: IUCN Red List.