Found on shallow, muddy or sandy bottoms, near islands . Takes refuge in holes. Does not appear to reach 6.5 cm TL.
Dorsal spines (total): 8; Dorsal soft rays (total): 18 - 19; Anal spines: 1; Anal soft rays: 18 - 20. Distinguished by the following characteristics: general body color is light grey-brown, typically have areas of very bright iridescent blue and/or yellow; body is laterally compressed; large, nearly vertical mouth; completely scaled body; first dorsal with VII spines; ventral fins are united .: elongated.
Behavioural data for Microgobius Signatus is currently being reviewed.
Diet information for Microgobius Signatus is currently being compiled.
Benthic spawner.
Marine; demersal; depth range 0 - 36 m . Tropical Central Atlantic: Caribbean Sea to Colombia and Venezuela.
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