Polyipnus asteroides

Polyipnus asteroides Schultz, 1938

Common Names

Pez hacha aquillado (Castilian)

Languages: English

Overview

Description

Dorsal-fin rays 14–16 (rarely 17); anal-fin rays (rarely 15) 16–17 (rarely 18); pectoral-fin rays (rarely 12) 13–14 (rarely 15); gill rakers 20–23 (rarely 24); vertebrae 32–33. Large to giant species, often exceeds 70 mm SL; body relatively broad, tapering evenly to narrow but short caudal peduncle, its greatest depth greater than length of subcaudal photophores; posttemporal and dorsal spines short (less than one-fourth eye diameter); preopercle spine very short, triangulate; abdominal keel scales extend slightly below ventral body margin; first supra-anal photophore markedly lower than second; first supra-abdominal photophore raised well above other two, second and third supra-abdominals usually about same height; jaws medium to large; teeth minute; gill rakers medium to long, spinose on internal surface; in preservative, pigment dark dorsally; dark pigment bar extends toward but never reaches midline; lateral border of dark dorsal pigment straight from dorsal spine to caudal peduncle; dark pigment spots lateral midline, pigment striations present on trunk.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Type Information

Type specimen(s)

Holotype: USNM 102979

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Type locality

18°29'45"N, 65°25'50"W to 18°35'30"N, 65°23'54"W, Caribbean Sea, depth 200-400 fathoms.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Synonymy

Data on Catalog of Fishes

View data on Catalog of Fishes here.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Description

Diagnostic Description

Post-temporal spine simple, bearing no basal spines; lateral edge of post-temporal-supracleithrum smooth; keel scales with smooth ventral surfaces; supraanal photophores separate, usually raised well above anal group. Post-temporal spine short, its length less than one-fourth the diameter of orbit; anal photophore number 7 to 9; body robust, less than 1.9 times body depth; first supra-anal photophore markedly lower than second. Teeth absent on posterior vomerine shaft; second supra-anal photophore even with or raised above third; supra-abdominal photophores nonsymmetrical, first photophore raised well above other two. Gill rakers to 24; dorsal rays 14 to 16; lower margin of dark dorsal pigment straight from dorsal spine to caudal peduncle. Anal pterygiophore margin essentially straight; anal photophore number 9 (rarely 10); greater than 3.7 times body depth at end of dorsal

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Size

Exceed 70 mm SL.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Ecology and Distribution

Distribution

Restricted to the western North Atlantic; abundant in the Caribbean and Gulf of  Mexico from the coast of Venezuela to the straits of Florida; off the outer islands of the West lndies and less abundantly along the east Coast of North America; a single capture bas been reported as far north as the Gulf  of Maine.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

References

References

Baird RC. 1971. The Systematics, Distribution, and Zoogeography of the Marine Hatchetfishes (family Sternoptychidae). Bulletin of the Museum of Comparative Zooology 142(1):1–128.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher

Main Reference

Baird RC. 1971. The Systematics, Distribution, and Zoogeography of the Marine Hatchetfishes (family Sternoptychidae). Bulletin of the Museum of Comparative Zooology 142(1):1–128.

Author(s): Kenaley, Christopher
Rights holder(s): Kenaley, Christopher