Eleotris melanosoma 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Eleotridae

Scientific Name: Eleotris melanosoma Bleeker, 1853
Regional Assessments:
Common Name(s):
English Broadhead Sleeper, Black Spinecheek Gudgeon
Culius macrocephalus Bleeker, 1857
Eleotris macrocephala Bleeker, 1857
Taxonomic Source(s): Kottelat, M. 2013. The fishes of the inland waters of southeast Asia: a catalogue and core bibiography of the fishes known to occur in freshwaters, mangroves and estuaries. Raffles Bulletin of Zoology Supplement No. 27: 1-663.
Taxonomic Notes:

Eleotris melanosoma was described from Wahai in the Maluku islands (Bleeker 1852). It is distinguished from congeners in having 46–58 lateral row scales, usually 18–19 pectoral rays, 12–13 gill rakers on the first gill arch and two longitudinal rows of papillae on the opercle meeting posteriorly (Kottelat et al. 1993).

This species has been confused with Eleotris fusca; hence Pusey et al. (2004) combined their natural history account of both. Research on the taxonomy of E. fusca is currently underway (P. Keith pers comm. 2011).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2016-06-30
Assessor(s): Larson, H., Ng, H.H. & Sparks, J.S.
Reviewer(s): Sayer, C.
Contributor(s): Livingston, F., Wilson, P., Lintott, P., Kemp, K., Batchelor, A., Milligan, H.T., Keith, P., Hoese, D., De Silva, R., Lutz, M.L., Jopling, B., Lewis, S., Sears, J. & Smith, J.
Facilitator/Compiler(s): Pippard, H.
This is a very widespread, abundant species with no known or projected threats. The global population of this species is not expected to undergo any significant decline in the near future, and it is assessed as Least Concern.
Previously published Red List assessments:

Geographic Range [top]

Range Description:

The species is known from from the east African coast and from the Society Islands to north of Japan. This species has been introduced into the Panama Canal Zone (Koumans 1953).

Countries occurrence:
American Samoa; Australia (Queensland); China; Fiji; French Polynesia; Hong Kong; Indonesia; Japan; Kenya; Korea, Democratic People's Republic of; Korea, Republic of; Madagascar; Maldives; Mozambique; New Caledonia; Northern Mariana Islands; Palau; Papua New Guinea; Philippines; Samoa; Seychelles; Singapore; South Africa; Taiwan, Province of China; Tanzania, United Republic of; Thailand; Tonga; Vanuatu
FAO Marine Fishing Areas:
Indian Ocean – western; Pacific – northwest; Pacific – western central; Pacific – eastern central
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information on the population trend available for this species. However, given its very wide distribution and the absence of any significant threats, the global population is considered stable.
Current Population Trend:Stable
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This is a demersal, amphidromous species that can usually be found on mud, sand or gravel substrates. Adults inhabit brackish estuaries and medium to large size rivers. Like most species in the genus, individuals require concealment amongst leaf litter, woody debris and submerged bank vegetation of freshwater streams.

The species has been well-studied in Okinawa, Japan (Maeda and Tachihara 2004, Maeda et al. 2007), where this species spawns during May to December, but their pelagic larval duration is not known. The larvae settle out within estuarine waters (tidally influenced).
Systems:Freshwater; Marine
Continuing decline in area, extent and/or quality of habitat:Unknown

Use and Trade [top]

Use and Trade: This species is occasionally caught in subsistence fisheries (although not targeted), and is rarely caught as an ornamental fish.

Threats [top]

Major Threat(s): There are no major threats for this species. It is known from estuarine and riverine habitats where it may suffer localised declines due to water pollution and fishing activity.

Conservation Actions [top]

Conservation Actions: Although this is a common, very widespread species, more information about its population size and trend, biology and potential threats facing this species (even if localised) is required. No species-specific conservation measures are in place or needed at present. It occurs within several protected areas within its range.

Citation: Larson, H., Ng, H.H. & Sparks, J.S. 2017. Eleotris melanosoma. The IUCN Red List of Threatened Species 2017: e.T7135A58295034. . Downloaded on 23 September 2018.
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