分類 / Names
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Siluriformes (Catfishes) >
Bagridae (Bagrid catfishes)
Etymology: Mystus: Greek, mystax = whiskered, used by Belon in 1553 to describe all fishes with whiskers (Ref. 45335); alasensis: Name derived from the Sungai Alas (Alas River) drainage.
Environment: milieu / climate zone / 深さの範囲 / distribution range
生態学
; 新鮮な水 底生の. Tropical
Asia: Sungai Alas drainage in Sumatra, Indonesia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 10.8 cm SL オス/雌雄の選別がない; (Ref. 55439)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 1; 背鰭 (合計) : 7; 臀鰭: 12 - 14; 脊つい: 38 - 41. Distinguished from all other Southeast Asian congeners, except Mystus castaneus, M. impluviatus and M. nigriceps by the following combination of characters: a moderately long (29-37% SL), low adipose-fin, uniform body color, fossa on midline of the cranium not reaching to the base of the supraoccipital process and extremely long maxillary barbels that reach beyond the base of the caudal fin (Ref. 55439). Differs from M. castaneus, M. impluviatus and M. nigriceps in lacking a dark triangular mark at the base of the caudal fin. Further differs from M. nigriceps in having a longer (34.3-36.3% SL vs. 26.3-31.4), deeper (6.7-7.5% SL vs. 4.1-6.0) adipose fin and longer pelvic fins (17.6-20.2% SL vs. 13.4-16.7); and from M. castaenus and M. impluviatus in having a more gently-sloping dorsal profile of the head. Differs also from M. impluviatus in lacking (vs. presence) of fontanel on the supraoccipital and having a deeper adipose fin (6.7-7.5% SL vs. 4.7-6.0) (Ref. 55439).
Body shape (shape guide): elongated.
Facultative air-breathing in the genus (Ref. 126274); Oviparous, distinct pairing possibly like other members of the same family (Ref. 205).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ng, H.H. and R.K. Hadiaty, 2005. Two new bagrid catfish (Teleostei: Bagridae) from the Alas River drainage, northern Sumatra. Ichthyol. Explor. Freshwat. 16(1):83-92. (Ref. 55439)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-1)
Human uses
用具
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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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00359 - 0.01926), b=2.95 (2.78 - 3.12), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
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 (Assuming Fec < 10,000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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Nutrients (Ref.
124155): Calcium = 346 [186, 855] mg/100g; Iron = 3.23 [1.59, 5.89] mg/100g; Protein = 16 [15, 17] %; Omega3 = 0.356 [0.131, 0.935] g/100g; Selenium = 57.6 [20.7, 156.5] μg/100g; VitaminA = 78.2 [24.8, 240.5] μg/100g; Zinc = 2.6 [1.5, 4.3] mg/100g (wet weight);
