Overview

Comprehensive Description

Biology

This solitary species inhabits the outer edge of the reef (Ref. 583). Usually beneath ledges or near entrance to caves (Ref. 42181). Benthic (Ref. 58302). A prized food fish with population greatly reduced in main Hawaiian islands due to fishing pressure, especially by spear fishermen. Stomach contents include small fishes (holocentrid, acanthurid and Aulostomus chinensis) (Ref. 42181).
  • Randall, J.E and W.N. Eschmeyer 2001 Revision of the Indo-Pacific scorpionfish genus Scopaenopsis, with descriptions of eight new species. Indo-Pac. Fish. (34):79 p. (Ref. 42181)
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Distribution

Eastern Central Pacific: Hawaii.
  • Randall, J.E and W.N. Eschmeyer 2001 Revision of the Indo-Pacific scorpionfish genus Scopaenopsis, with descriptions of eight new species. Indo-Pac. Fish. (34):79 p. (Ref. 42181)
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Hawaiian Islands.
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Physical Description

Morphology

Dorsal spines (total): 12; Dorsal soft rays (total): 9; Analspines: 3; Analsoft rays: 5
  • Eschmeyer, W.N. and J.E. Randall 1975 The scorpaenid fishes of the Hawaiian Islands, including new species and new records (Pisces: Scorpaenidae). Proc. Calif. Acad. Sci. 40(11):265-334. (Ref. 10482)
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Size

Maximum size: 510 mm ---
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Max. size

51.0 cm TL (male/unsexed; (Ref. 4887)); max. published weight: 3,450 g (Ref. 42181)
  • Honebrink, R. 1990 Fishing in Hawaii: a student manual. Education Program, Division of Aquatic Resources, Honolulu, Hawaii. 79 p. (Ref. 4887)
  • Randall, J.E and W.N. Eschmeyer 2001 Revision of the Indo-Pacific scorpionfish genus Scopaenopsis, with descriptions of eight new species. Indo-Pac. Fish. (34):79 p. (Ref. 42181)
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Diagnostic Description

Vertical scale rows 50-55; lachrymal bone with 2 spines over maxillary, first points down and forward, second points down and back, sometimes second split distally into 2 points; suborbital ridge usually with 5 spines, sometimes some spines split in larger specimens (Ref. 10482).
  • Eschmeyer, W.N. and J.E. Randall 1975 The scorpaenid fishes of the Hawaiian Islands, including new species and new records (Pisces: Scorpaenidae). Proc. Calif. Acad. Sci. 40(11):265-334. (Ref. 10482)
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Type Information

Type for Scorpaenopsis cacopsis
Catalog Number: USNM 49690
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Illustration
Collector(s): T. Wood
Locality: Hawaiian Islands, Hawaii, United States, Pacific
  • Type:
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Ecology

Habitat

Environment

reef-associated; marine; depth range 4 - 60 m (Ref. 42181)
  • Randall, J.E and W.N. Eschmeyer 2001 Revision of the Indo-Pacific scorpionfish genus Scopaenopsis, with descriptions of eight new species. Indo-Pac. Fish. (34):79 p. (Ref. 42181)
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Depth: 0 - 6m.
Recorded at 6 meters.

Habitat: reef-associated. This solitary species inhabits the outer edge of the reef. Feeds on small fish and invertebrates.
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Trophic Strategy

Feeds on fishes (Ref. 2763).
  • Honebrink, R. 1990 Fishing in Hawaii: a student manual. Education Program, Division of Aquatic Resources, Honolulu, Hawaii. 79 p. (Ref. 4887)
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
  • Miyasaka, A. 1993 A database on scientific and common names of fishes exported from Hawaii. The information was derived from the above mentioned database. A printout of the names is also available from the State of Hawaii, Department of Land and Natural Resources, 1151 Punchbowl Street, Honolulu, Hawaii. (Ref. 5358)
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