分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335); longifilis: From the Latin longus, meaning long, and filum, meaning thread, in reference to the long barbels of this species. Used as a noun (Ref. 56465).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 热带
Asia: Known from the type locality in the Sittang River drainage, southern Myanmar (Ref. 56465).
已知来自模式标本产地在 Sittang 河流域，缅甸南部.(参考文献 56465)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 5.3 cm SL 雄鱼/尚未辨别雌雄; (Ref. 56465)
简单描述
型态特徵 | 形态测量图
脊椎骨: 33 - 35. Akysis longifilis is a member of the A. variegatus species group and can be
distinguished from congeners in the group (except for A. brachybarbatus, A. fuliginatus, A. pictus, A. prashadi, A. variegatus, A. varius and A. vespa) in having a smooth (vs. serrated) posterior edge of the pectoral spine. It differs from A. brachybarbatus in having a narrower head (21.1-24.7% SL vs. 25.5-28.0) and a more slender caudal peduncle (5.6-7.2% SL vs. 7.9-8.1), and from A. fuliginatus in having a longer adipose-fin base (25.7-31.1% SL vs. 15.1-19.5), more slender body (9.7-13.6% SL vs. 14.1-16.6) and caudal peduncle (5.6-7.2% SL vs. 10.1-10.5), longer nasal and maxillary barbels (nasal barbel length 67.4-96.4% HL vs. 52.1-58.2; maxillary barbel length 123.2-159.6% HL vs.100.0-109.1), presence of light saddle-shaped spots on the body (vs. uniformly dark body), and a forked (vs. truncate) caudal fin. Akysis longifilis can be distinguished from A. pictus in having a more slender caudal peduncle (5.6-7.2% SL vs. 7.7-8.5), longer
adipose-fin base (25.7-31.1% SL vs. 22.0-23.6), and longer nasal and maxillary barbels (nasal barbel length 67.4-96.4% HL vs. 54.3-56.7; maxillary barbel length 123.2-159.6% HL vs. 95.7-128.8), and from A. prashadi in having a longer caudal peduncle (18.3-23.2% SL vs. 16.5-18.4). It differs from A. variegatus in having longer nasal and maxillary barbels (nasal barbel length 67.4-96.4% HL vs. 33.3-62.3; maxillary barbel length 123.2-159.6% HL vs. 78.3-114.8), from A. varius in having a forked (vs. truncate) caudal fin, and from A. vespa in having a longer adipose-fin base (25.7-31.1% SL vs. 17.6-21.1), more slender caudal peduncle (5.6-7.2% SL vs. 7.6-8.5), longer nasal and maxillary barbels (nasal barbel length 67.4-96.4% HL vs. 54.5-72.5; maxillary barbel length 123.2-159.6% HL vs. 89.0-98.2), and more vertebrae (33-35 vs. 31-32) (Ref. 56465).
Akysis longifilis 是 A. variegatus 种群的一个成员而且能是
在有一个方面在群 (除了 A. brachybarbatus, A. fuliginatus, A. pictus, A. prashadi, A. variegatus, A. varius 与 A. vespa) 与同类区分了胸棘的平滑 (vs. 锯齿状的) 后缘。 它有别于A. brachybarbatus 在有一個方面較狹窄的頭部 (21.1-24.7% SL vs.25.5-28.0) 與一個更細長的尾柄 , 與從 A. fuliginatus 在有一個方面較長的脂鰭基底 (25.7-31.1% SL vs.15.1-19.5) ，更細長的身體 (9.7-13.6% SL vs.14.1-16.6) 與尾柄 (5.6-7.2% SL vs.10.1-10.5) ，更長的鼻與顎的觸鬚 (鼻的觸鬚長度 67.4-96.4% HL vs.52.1-58.2; 上頜骨觸鬚長度 123.2-159.6% HL vs.100.0-109.1), 在身體 (vs. 全黑色身體) 上有淡的鞍狀斑點, 與一個分叉的 (vs. 截形) 尾鰭。 Akysis longifilis 能在有一個方面被與 A. pictus 區分更細長的尾柄 (5.6-7.2% SL vs.7.7-8.5), 更長的
脂鰭基底 (25.7-31.1% SL vs.22.0-23.6), 與更長的鼻與顎的觸鬚 (鼻的觸鬚長度 67.4-96.4% HL vs.54.3-56.7; 上頜骨觸鬚長度 123.2-159.6% HL vs.95.7-128.8), 與從 A. prashadi 在有一個方面較長的尾柄.(18.3-23.2% SL vs.16.5-18.4) 它有別於 A. variegatus 有比較長的鼻骨與顎的觸鬚 (鼻的觸鬚長度 67.4-96.4% HL vs.33.3-62.3; 上頜骨觸鬚長度 123.2-159.6% HL vs.78.3-114.8), 從 A. varius 在有一個方面分岔了 (vs. 截形) 尾鰭, 與從 A. vespa 在有一個方面較長的脂鰭基底 (25.7-31.1% SL vs.17.6-21.1) ，更細長的尾柄 (5.6-7.2% SL vs.7.6-8.5) ，更長的鼻與顎的觸鬚 (鼻的觸鬚長度 67.4-96.4% HL vs.54.5-72.5; 上頜骨觸鬚長度 123.2-159.6% HL vs.89.0-98.2), 與更多的脊椎骨 (33-35 vs.31-32).(參考文獻 56465)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
已知来自模式标本产地在 Sittang 河流域，缅甸南部.(参考文献 56465)
Ng, H.H., 2006. Akysis longifilis, a new species of catfish (Teleostei: Akysidae) from Myanmar. Zootaxa 1150:19-30. (Ref. 56465)
人类利用
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
