Epinephelus bruneus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Epinephelidae

Scientific Name: Epinephelus bruneus Bloch, 1793
Common Name(s):
English Longtooth Grouper, Kelp Grouper, Tawny Grouper
Cepahlopholis moara (Temminck and Schlegel, 1842)
Cepahlopholis moara (Temminck and Schlegel, 1842)
Epinephelus bruneus Bloch, 1793
Epinephelus brunneus Bloch, 1793
Epinephelus brunneus Bloch, 1793
Epinephelus moara (Temminck and Schlegel, 1842)
Epinephelus moara (Temminck and Schlegel, 1842)
Serranus moara Temminck and Schlegel, 1842
Serranus moara Temminck and Schlegel, 1842
Taxonomic Notes: E. bruneus was generally identified as E. moara (Heemstra and Randall 1993). Mis-spelt as E. brunneus in Chan (1968).

Assessment Information [top]

Red List Category & Criteria: Vulnerable A4d ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Thierry, C., Sadovy, Y. & To, A.W.L.
Reviewer(s): Sadovy, Y. & Moss, K. (Grouper and Wrasse Red List Authority)
Epinephelus bruneus is listed as Vulnerable on the basis of a decline of at least 30% in the southern half of its relatively narrow range. Bottom trawling within its habitat along the coast of China is intensive. Fishing pressure appears to be increasing and declines are inferred in other parts of its range. Across its range, there is little fisheries management, thus, further declines in abundance are inferred.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Epinephelus bruneus is narrowly distributed from the coasts of the Republic of Korea, Japan (north to Hegura-jima Island, 37°50’N), China (north to Shanghai, south to Hong Kong and Hainan Island), and Taiwan (Heemstra and Randall 1993).
Countries occurrence:
China; Hong Kong; Japan; Korea, Republic of; Philippines; Taiwan, Province of China; Viet Nam
FAO Marine Fishing Areas:
Pacific – northwest
Additional data:
Lower depth limit (metres):200
Upper depth limit (metres):20
Range Map:Click here to open the map viewer and explore range.

Population [top]

Little information is currently available for this species across most of its range, although it has been previously abundant in regional fisheries. The species is occasionally seen in local Hong Kong markets (Sadovy Y, pers. comm.).

E. bruneus was one of the most abundant species in Hong Kong waters in 1968 (Chan 1968). E. bruneus was available in markets throughout the year, with highest abundance from October to May (Chan 1968). Wilson (2003) frequently observed E. bruneus on Hong Kong artificial reefs. Sadovy and Cornish (2000) later described E. bruneus as one of the rarest grouper in Hong Kong, especially for fish larger than 50 cm TL.

Fishery-independent data
Hong Kong
Wilson (2003) stated that E. bruneus could be found on artificial reefs frequently. Sadovy and Cornish (2000) occasionally recorded E. bruneus during underwater observations (one 30 cm TL fish in a shallow coral area at about 3 m and a larger individual around large boulders at depth of 15 m).

Fishery-dependent data
No fishery-dependent data is available. No data are available on the sex composition or length-age relationship.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:General
E. bruneus inhabits rocky reefs and mud bottoms (Heemstra and Randall 1993). Adults can be found in depths of 20 to 200 m, while juveniles occur in shallow water (Heemstra and Randall 1993). The maximum size ofE. bruneus recorded is 136 cm TL (38 kg) (Jason Schratwieser, IGFA World Records, pers. comm. 12 Jan 2007).

According to fishermen, does not take baits readily during summer and the gonads of E. bruneus are empty, indicating a “spent” (post-reproductive) condition (Chan 1968).

No information is available on sexual pattern, fecundity or recruitment.
Generation Length (years):<10years

Use and Trade [top]

Use and Trade: Due to its large size, the price is sometimes a little lower than that of other commercial groupers (Chan 1968). E. bruneus is an excellent eating fish that can be captured with handlines, longlines, and trawls (Heemstra and Randall 1993).

E. bruneus is one of the most economically important species for aquaculture in Japan, but high mortality during early life stages affects the success of artificial larval rearing (Kato et al. 2004).

Threats [top]

Major Threat(s): The major threat to E. bruneus is fishing. The species is vulnerable to a wide range of gear types, including long-liners, trawlers and hand-liners (Chan 1968). Fishing on both juveniles and adults contributes to this threat.

Conservation Actions [top]

Conservation Actions: Not known to occur in any enforced marine protected areas. There are no specific conservative measures for E. bruneus.

A more up-to-date stock assessment is crucial in determining abundance and population trends. More information on its stock, biology, age-and-growth and management practices is recommended.

Citation: Thierry, C., Sadovy, Y. & To, A.W.L. 2008. Epinephelus bruneus. The IUCN Red List of Threatened Species 2008: e.T64396A12769364. . Downloaded on 26 September 2018.
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