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Eleotris fusca  (Forster, 1801)

Dusky sleeper
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Native range | All suitable habitat | Point map | Year 2100
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Eleotris fusca   AquaMaps   Data sources: GBIF OBIS
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Image of Eleotris fusca (Dusky sleeper)
Eleotris fusca
Picture by Appleby, C.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Eleotridae (Sleepers) > Eleotrinae
Etymology: Eleotris: The name of a Nile fish, eleotris (Ref. 45335).

Environment / Climate / Range Ecology

Marine; freshwater; brackish; demersal; amphidromous (Ref. 51243); depth range 0 - 5 m (Ref. 86942).   Tropical; 25°C - ? (Ref. 2059); 45°N - 27°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific: East Africa to French Polynesia.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 26.0 cm TL male/unsexed; (Ref. 5493)

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 7-9; Anal spines: 1; Anal soft rays: 8. Diagnosis: (57)59-68 longitudinal line scales; preopercular spine present; (8)9-10 gillrakers on lower part of first branchial arch (Ref. 79840). Dark brown to black in color; horizontal lines on body; young with spotted fins (Ref. 5493).

Biology     Glossary (e.g. epibenthic)

Adults inhabit lagoons, estuaries and freshwater (Ref. 6028, 48637, 79840). They occur in the lower reaches of freshwater streams, usually on mud bottoms (Ref. 44894). Juveniles are found mainly among mangrove roots in the more saline areas of lagoons and estuaries (Ref. 6028, 79840). Carnivorous (Ref. 79840). Marketed fresh (Ref. 12693).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Spawns eggs on submerged plants with small leaves. Female tends and fans the eggs until hatching and loosely guards the fry for a few days thereafter.

Main reference Upload your references | References | Coordinator | Collaborators

Maugé, L.A., 1986. Eleotridae. p. 389-398. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MARC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 6802)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: minor commercial; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 25.4 - 29.3, mean 28.5 (based on 3082 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  3.8   ±0.3 se; Based on diet studies.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (31 of 100) .
Price category (Ref. 80766):   Unknown.