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Carangaria/misc (Various families in series Carangaria) >
Polynemidae (Threadfins)
Etymology: Polynemus: Greek, poly = a lot of + Greek,nema = filament (Ref. 45335); melanochir: Name meaning 'freshwater' in reference to its type locality, Tonle Sap Lake (Ref. 43351).
More on author: Valenciennes.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水; 汽水性の 底生の. Tropical; 24°C - 28°C (Ref. 13614)
Asia: Mekong River system at least as far as Can Tho, Viet Nam and from the Bassac River at least as far as My Tho, Viet Nam. Reported from Indonesia (Ref. 5978).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 25.0 cm SL オス/雌雄の選別がない; (Ref. 12693)
背面の脊椎 (合計) : 8 - 9; 背鰭 (合計) : 16; 肛門の骨: 3; 臀鰭: 11 - 12. Head and body grayish-black dorsally, pale whitish-yellow ventrally. Snout long, strongly pointed (7% of SL). Pectoral filaments 7, the last probably the longest. Upper caudal fin lobe short (34-35% of SL). Swim bladder absent (Ref. 43351).
Inhabit lower sections of rivers. Can probably be found in estuaries (Ref. 9685). Important food fish in along the Mekong River and its related rivers (Ref. 57343).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Motomura, H., 2004. Threadfins of the world (Family Polynemidae). An annotated and illustrated catalogue of polynemid species known to date. FAO Spec. Cat. Fish. Purp. Rome: FAO. 3:117 p. (Ref. 57343)
Human uses
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 (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00308 - 0.01483), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.5 ±0.50 se; based on food items.
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (21 of 100).
