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Siluriformes (Catfishes) >
Siluridae (Sheatfishes)
Etymology: Ompok: It is a bad reproduction of a Malayam fish name as limpok/ompok (Ref. 45335); brevirictus: From the Latin brevis meaning short, and rictus meaning an open mouth. The name is used in reference to the relatively short mouth of this species (correspondingly causing the mouth rictus to be separated from the anterior orbital margin by.
Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة قاعية التغذية و المعيشة. Tropical
Asia: Sumatra, Indonesia. Known from the short coastal rivers that drain the western face of the Leuser Mountain Range in northern Sumatra, including the Kreung Kluet (Kluet River) drainage
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 12.5 cm SL ذكر/ مختلط الجنس; (Ref. 82371)
وصف مختصر
مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي
Ompok brevirictus can be distinguished from all Southeast Asian congeners, except for O. siluroides and O. miostomus, in having melanophores on the tympanic region forming a prominent black spot (vs. tympanic region dark, but without any melanophores forming a distinct spot). It differs from O. siluroides and O. miostomus in having an evenly convex predorsal profile (vs. with a concavity posterior to orbit) and a more prominent lower jaw that is more broadly curving. Ompok brevirictus additionally differs from O. siluroides in having the mouth rictus separated from the anterior orbital margin by a distance of more than one-third (vs. less than one-third) eye diameter (4.2–5.2% HL vs. 3.2–3.7) and lacking (vs. possessing) a distinct dark wedge-shaped spot on base of the caudal fin (Ref. 82371).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
Ng, H.H. and R.K. Hadiaty, 2009. Ompok brevirictus, a new catfish (Teleostei: Siluridae) from Sumatra. Zootaxa 2232:50-60. (Ref. 82371)
IUCN Red List Status (Ref. 130435: Version 2024-2)
في خطر (EN) (B1ab(iii)); Date assessed: 01 September 2018
استخدامات بشرية
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مصادر علي الأنترنت
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=0.00562 (0.00279 - 0.01132), b=3.00 (2.83 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.6 ±0.6 se; based on size and trophs of closest relatives
المرونه (Ref.
120179): عالي, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أقل من 15 شهر (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
