Hypoplectrus nigricans

Common Name

Black Hamlet

Year Described

Poey, 1852

Identification

Dorsal Fin: X, 14-17
Anal Fin: III, 7
Pectoral Fin: 13-14
Pelvic Fin: I, 5
Lateral Line: 48-53
Gill Rakers: 7 (upper), 13-14 (lower) on first arch, 18-21 total

Body robust and laterally compressed. Steeply sloping head profile. Dorsal fin continuous with no obvious notch between spiny and soft portions. Anal fin much smaller than dorsal fin. Caudal fin is typically truncate to slightly emarginate. The mouth is large and terminal, with the lower jaw often slightly projecting. Jaws bear villiform teeth, with an inner band of enlarged canines. Scales are ctenoid and cover the body and much of the head. The lateral line is continuous and curves gently along the upper body.

Color

Variable from uniform dark brown to yellowish brown anteriorly with almost black fins. There is often a bluish cast on the body and fins, especially the pelvic fins, anal fin, and lower head. The pectoral fin rays vary from yellow to black. The tail is always dark.

Size

Maximum size to 15.3cm SL.

Habitat

Coral reefs from 1-67m.

Range

Caribbean Sea: Bahamas to N. South America.

References

McEachran, J.D. and J.D. Fechhelm. 2005. Fishes of the Gulf of Mexico. Volume 2: Scorpaeniformes to Tetraodontiformes. University of Texas Press, Austin. i-viii +1-1004.