Actinopteri (ray-finned fishes) > Cichliformes
(Cichlids, convict blennies) > Cichlidae
(Cichlids) > Etroplinae
Etymology: Etroplus: Name from the words 'etron' meaning belly and 'oplon' for arms; referring to the spines on the lower side; that is, the long spinour anal-fin..
More on author: Bloch.
Environment: milieu / climate zone / depth range / distribution range
Brackish; benthopelagic; depth range 10 - ? m. Tropical; 23°C - 26°C (Ref. 2060); 11°N - 6°S
Western Indian Ocean: India and Sri Lanka.
Length at first maturity / Size / Weight / Age
Maturity: Lm 15.0  range ? - ? cm
Max length : 40.0 cm TL male/unsexed; (Ref. 41236); common length : 20.0 cm TL male/unsexed; (Ref. 6028)
Primarily found in brackish water but known to tolerate fresh or marine waters for short periods (Ref. 48490). Found in large rivers, reservoirs, lagoons and estuaries. Feed on filamentous algae, plant material and insects.
After spawning, about 500 eggs are laid and attached to a submerged log, rock or sometimes roots and weeds, in still or slow flowing water. Parents guard and fan the eggs until hatching, usually about 4 days. The fry shoal around their parents during the first weeks of growth. Parents refrain from feeding from the time of spawning until the fry become independent.
Pethiyagoda, R., 1991. Freshwater fishes of Sri Lanka. The Wildlife Heritage Trust of Sri Lanka, Colombo. 362 p. (Ref. 6028)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: commercial; aquaculture: commercial; aquarium: commercial
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.01102 - 0.02279), b=2.93 (2.83 - 3.03), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 2.9 ±0.26 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tm=2).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (32 of 100).
Nutrients (Ref. 124155
): Calcium = 71.9 [36.1, 144.2] mg/100g ; Iron = 1.14 [0.64, 2.21] mg/100g ; Protein = 18.7 [16.2, 20.8] % ; Omega3 = 0.233 [0.103, 0.526] g/100g ; Selenium = 34.1 [13.1, 86.6] μg/100g ; VitaminA = 9.53 [2.29, 32.69] μg/100g ; Zinc = 1.34 [0.80, 2.43] mg/100g (wet weight); based on nutrient studies.