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Mystus alasensis  Ng & Hadiaty, 2005

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Mystus alasensis
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drawing shows typical fish in this Family.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 辐鳍鱼纲 (条鳍鱼) > Siluriformes (Catfish) > 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.

环境 / 气候 / 范围 生态学

; 淡水 居于水底的.    , preferred ?

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Asia: Sungai Alas drainage in Sumatra, Indonesia.

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 10.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 55439)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 1; 背的软条 (总数): 7; 臀鳍软条: 12 - 14; 脊椎骨: 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).

生物学特性     字汇 (例如 epibenthic)

Oviparous, distinct pairing possibly like other members of the same family (Ref. 205).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

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)

世界自然保护联盟红皮书 (Ref. 115185)

  不评价 

CITES (Ref. 94142)

Not Evaluated

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