Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Eleotridae
(Bully sleepers) > Eleotrinae
Etymology: Eleotris: The name of a Nile fish, eleotris (Ref. 45335). More on author: Forster.
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal; amphidromous (Ref. 51243); depth range - 5 m (Ref. 86942), usually - m (Ref. ). Tropical; 25°C - ? (Ref. 2059); 45°N - 27°S
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)
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).
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.
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. 124695)
Threat to humans
Fisheries: minor commercial; aquarium: commercial
Estimates based on models
Preferred temperature (Ref. 115969
): 25.4 - 29.3, mean 28.5 °C (based on 3082 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00342 - 0.02024), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.3 se; based on diet studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (31 of 100) .
Nutrients (Ref. 124155
): Calcium = 552 [229, 1,146] mg/100g ; Iron = 0.767 [0.456, 1.429] mg/100g ; Protein = 16.9 [15.4, 18.5] % ; Omega3 = 0.392 [0.191, 0.801] g/100g ; Selenium = 75 [35, 158] μg/100g ; VitaminA = 27.4 [10.2, 78.0] μg/100g ; Zinc = 1.85 [1.26, 2.74] mg/100g (wet weight); based on nutrient studies.