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Erethistoides ascita Ng & Edds, 2005

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drawing shows typical species in Sisoridae.

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Teleostei > Siluriformes (Catfishes) 鯰形目 (Catfishes) > Sisoridae (Sisorid catfishes) 吸口鯰科 (Sisorid catfishes) > Sisorinae
Etymology: Erethistoides: Greek, erethizo = that irritates + Greek, suffix oides = similar (Ref. 45335);  ascita: From the Latin adjective ascitus, meaning strange, in reference to the unusual pattern of serration on the anterior edge of the pectoral spine..

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 居於水底的; pH range: 7.5 - 8.0. ? - 30°C (Ref. 55978)

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Asia: Nepal.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 4.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 85009)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

脊椎骨: 27 - 30. Distinguished from congeners in having serrations on the anterior edge of the pectoral spine diverging at the distal quarter (vs. middle) and in having flattened and elongate plaque-like tubercles (vs. rounded tubercles) on the head and body. Both E. ascita and E. cavatura differ from E. montana and E. pipri in having a longer caudal peduncle (19.3-22.5% SL vs. 14.4-17.3). Both species differ further from E. montana in having a more slender body (body depth at anus 8.6-10.5% SL vs. 10.6-11.4) and from E. sicula by the absence (vs. present) of slight median depression on the lower lip margin. E. ascita differs further from E. cavatura in having the serrations on the anterior edge of the pectoral spine more sideways (vs. anteriorly) directed, a smaller eye (13.2-17.6% HL vs. 17.7-20.9) and nostrils (the length of the narial complex 53-75% of interorbital width vs. 77-90), and from E. sicula. In having a deeper caudal peduncle (5.4-6.2% SL vs. 4.1-5.1) (Ref. 55978).

生物學特性     字彙 (例如 epibenthic)

Found in pebble and cobble riffles with moderate depth of about 20 cm (Ref. 55978).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚


主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Ng, H.H. and D.R. Edds, 2005. Two new species of Erethistoides (Teleostei: Erethistidae) from Nepal. Ichthyol. Explor. Freshwat. 16(3):239-248. (Ref. 55978)

IUCN 瀕危狀態 (Ref. 130435)

  資料不足 (DD) ; Date assessed: 21 December 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00284 - 0.02223), b=3.08 (2.84 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).