Overview

Comprehensive Description

Biology

Specimens collected from coarse sand bottom with broken shell and coral (Ref. 42181). Benthic (Ref. 58302).
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Distribution

Range Description

Scorpaenopsis altirostris is endemic to the Hawaiian Islands. It is only known from its type locality. However, it has been noted that S. cotticeps from the Philippines might be the same species (Eschmeyer and Randall 1975).
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Eastern Central Pacific: Hawaii.
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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
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Size

Max. size

4.6 cm SL (male/unsexed; (Ref. 42181))
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Diagnostic Description

About 1/4 of orbit extending above dorsal profile of head. Spines dorsally on head relatively low, supraorbital very broad-based, postorbital more blade-like and angling laterally. Interorbital ridges originating medial to rear edge of posterior nostrils, closer together in mid-length of interorbital than the width of one ridge, and extending to base of tympanic spines. Occipital pit moderately deep, front edge incurved, with no distinct ridges at margins. Suborbital pit small but relatively deep, below anterior half of orbit. Suborbital ridge with 4 spines, the first on lacrimal below ridge. Upper opercular spine divided into 2-4 points. Lacrimal with 2 spines over maxilla, the anterior angling forward and the posterior projecting backward. Supraocular tentacle varying from shorter than supraocular spine to longer than orbit diameter. First dorsal spine 1.60-1.65 in 2nd spine; 4th spine longest, about 2.15-2.55 in head; penultimate spine 1.3 in last spine. Second anal spine longer than 3rd, 2.05-2.15 in head. Pectoral fins long, extending to a vertical base of 1st and 2nd anal soft ray (Ref. 42181).
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Type Information

Cotype for Scorpaenopsis altirostris
Catalog Number: USNM 51671
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1902
Locality: Hawaii: South Coast of Molokai Island Lae-O Ka Laau Light, N. 71 Degrees, W. 21.9', Molokai, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 134 to 79
Vessel: Albatross
  • Cotype:
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Type for Scorpaenopsis altirostris
Catalog Number: USNM 51636
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Illustration
Year Collected: 1902
Locality: South Coast of Oahu Island. Honolulu Light, N. 2 degrees, E. 2.4', Oahu, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 386
Vessel: Albatross
  • Type:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The scorpionfish, Scorpaenopsis altirostris, is a demersal species that has a depth range of 79–134 m, and has been found over coarse sand with broken shells and coral. Most species from the Scorpaenidae family are known to lead solitary lives and only aggregate for reproduction (FAO 1999).

Systems
  • Marine
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Environment

demersal; marine; depth range 79 - 134 m (Ref. 42181)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Motomura, H.

Reviewer/s
Collen, B., Richman, N., Beresford, A., Chenery, A. & Ram, M.

Contributor/s
De Silva, R., Milligan, H., Lutz, M., Batchelor, A., Jopling, B., Kemp, K., Lewis, S., Lintott, P., Sears, J., Wilson, P. & Smith, J. and Livingston, F.

Justification
Scorpaenopsis altirostris has been assessed as Least Concern. Although this species is only known from a few specimens found around Hawaii, it is unlikely that this species is being impacted by any major threat process at present. Further taxonomic research is needed to determine whether this species is distinct from S. cotticeps, which is found around the Philippines.
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Population

Population
There is no population information available for Scorpaenopsis altirostris.

Population Trend
Unknown
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Threats

Major Threats
It is unlikely that Scorpaenopsis altirostris is being impacted by any major threat processes. The closely related species, S. cotticeps, is of no importance to fisheries (FAO 1999), and due to the small size of S. altirostris, it is unlikely to be taken as by-catch by fisheries.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no known species-specific conservation measures in place for Scorpaenopsis altirostris. However, its distribution may coincide with a number of marine protected area designations.

Further research is needed on the taxonomy of this species, to determine if it is distinct from S. cotticeps, from the Philippines.
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