分類 / Names
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Siluriformes (Catfishes) >
Akysidae (Stream catfishes) > Akysinae
Etymology: Akysis: Derived from Greek, a = without + Greek, kysthos = bladder (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 底生の漂泳性. Tropical
Asia: Myanmar. Known from the type locality in the Sittang River drainage, southern Myanmar (Ref. 80395)
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 3.4 cm SL オス/雌雄の選別がない; (Ref. 80397)
背面の脊椎 (合計) : 1; 背鰭 (合計) : 4 - 5; 脊つい: 32 - 33. Akysis portellus is most similar to A. longifilis, which occurs sympatrically in the Sittang River drainage. It is distinguished from A. longifilis in having a shorter adipose-fin base, smaller mouth and a more rounded head shape when viewed dorsally (Ref. 80397).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Ng, H.H., 2009. Akysis portellus sp. Nov., a new species of catfish (Teleostei: Akysidae) from the Sittang River drainage, Myanmar. Journal of Threatened Taxa 1(1):2-8. (Ref. 80397)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-2)
Human uses
用具
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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).
栄養段階 (Ref.
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
