分類 / Names
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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 / 深さの範囲 / distribution range
生態学
; 汽水性の 底生の漂泳性; 深さの範囲 10 - ? m. Tropical; 23°C - 26°C (Ref. 2060); 11°N - 6°S
Western Indian Ocean: India and Sri Lanka.
Length at first maturity / サイズ / 重さ / 年齢
成熟: Lm 15.0 range ? - ? cm
Max length : 40.0 cm TL オス/雌雄の選別がない; (Ref. 41236); common length : 20.0 cm TL オス/雌雄の選別がない; (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.
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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のレッドリストの状況は (Ref. 130435: Version 2025-1)
Human uses
水産業: 商業; 水産養殖: 商業; 水族館・水槽: 商業
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (参照
82804): PD
50 = 0.7500 [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).
栄養段階 (参照
69278): 2.9 ±0.26 se; based on food items.
回復力 (参照
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (tm=2).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
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Nutrients (Ref.
124155): Calcium = 82.7 [5.9, 469.4] mg/100g; Iron = 1.21 [0.12, 15.99] mg/100g; Protein = 19 [16, 21] %; Omega3 = 0.286 [0.118, 0.663] g/100g; Selenium = 65.8 [5.5, 508.4] μg/100g; VitaminA = 8.04 [0.90, 68.44] μg/100g; Zinc = 1.55 [0.17, 16.82] mg/100g (wet weight); based on
nutrient studies.
