Lớp phụ (Subclass) cá vây tia
(Catfish) > Schilbeidae
Etymology: mystus: Named for Mr. Adanson, collector of the type material of this species (Ref. 43912). More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt gần đáy; di cư trong nước ngọt (Ref. 51243); Mức độ sâu 4 - 69 m. Tropical; 23°C - 27°C (Ref. 1672); 25°N - 27°S, 17°W - 45°E
Africa: Nilo-Sudanese species, known from the Nile basin and in West Africa from the Senegal River eastwards to the Cross, Wouri and Sanaga River, including the Chad basin (Ref. 43912). Various reports, including from the Ogowe and Congo River basin or Zambia and Zimbabwe, are based on misidentifications (Ref. 43912). Reports from Angola and Tanzania are questionable and need confirmation.
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm 13.1, range 15 - ? cm
Max length : 35.0 cm SL con đực/không giới tính; (Ref. 57127); Khối lượng cực đại được công bố: 250.00 g (Ref. 3799); Tuổi cực đại được báo cáo: 7 các năm (Ref. 7248)
Các tia vây lưng cứng (tổng cộng): 1; Các vây lưng mềm (tổng cộng): 6. Diagnosis: adipose fin present (Ref. 43912, 57127, 81643) and fully developed (Ref. (Ref. 57127, 81643). Anterior nostrils more closer to each other than to posterior ones; inner margin of pectoral-fin spine strongly denticulate posteriorly (Ref. 43912, 57127, 81643). Nasal barbel reaching to anterior eye margin (Ref. 57127, 81643), but never extending beyond posterior margin of eye (Ref. 43912, 57127, 81643). Mouth subterminal (Ref. 57127, 81643), snout reaching beyond lower jaw (Ref. 43912). 45-64 branched anal-fin rays and 8-15 gill rakers on lower limb of first gill arch (Ref. 43912, 57127, 81643).
Lacustrine as well as fluviatile species, confined to lakes and moderate to large rivers (Ref. 43912). Shoals in standing or slowly flowing open water with emergent or submerged vegetation. Generally more active at night or in subdued light. Feed from mid-water and surface waters on a wide variety of foods including fish, insects, shrimps, snails, plant seeds, and fruit. Oviparous, eggs are unguarded (Ref. 205). Often important spawning migrations occur (Ref. 43912). Breed during the rainy season and may be either a single or multiple spawner in different localities, laying eggs on vegetation. May live up to 6-7 years (Ref. 7248). Max total length 45.0mm (Ref. 43912). Also caught with drawnets. In general considered as a flavoured, first class eating fish (Ref. 43912).
Distinct pairing (Ref. 205).
De Vos, L., 1995. A systematic revision of the African Schilbeidae (Teleostei, Siluriformes). With an annotated bibliography. Ann. Mus. R. Afr. Centr., Sci. Zool., 271:1-450. (Ref. 43912)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
Các nghề cá: Tính thương mại; cá để chơi: đúng; Bể nuôi cá: Tính thương mại
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Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00712 - 0.01169), b=2.98 (2.91 - 3.05), in cm Total Length, based on LWR estimates for this species (Ref. 93245
Mức dinh dưỡng (Ref. 69278
): 3.5 ±0.4 se; Based on diet studies.
Thích nghi nhanh (Ref. 69278
): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (K=0.09-0.94; tmax=6-7; assuming fec > 10,000).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (33 of 100) .