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Siluriformes (Catfishes) >
Clariidae (Airbreathing catfishes)
Etymology: Clarias: Greek, chlaros = lively, in reference to the ability of the fish to live for a long time out of water.
Eponymy: Carolus Franciscus Sala (1839–1881) was a Dutch soldier and collector. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt gần đáy. Tropical; 22°C - 28°C (Ref. 13614); 12°N - 4°N
Africa: from the Géba (Guinea-Bissau) to the Cavally (Côte d'Ivoire) (Ref. 57129). Also reported from the Casamance (Senegal)(Ref. 57129).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 50.8 cm TL con đực/không giới tính; (Ref. 57129)
Các tia vây lưng cứng (tổng cộng) : 0; Các vây lưng mềm (tổng cộng) : 79 - 93; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 67 - 79; Động vật có xương sống: 63 - 68. Diagnosis: typical extremely elongate, eel-shaped body (maximum body depth 8.7-13.9% of standard length); head length 20.2% SL (Ref. 57129). Head rather rectangular in dorsal outline; snout broadly rounded; eyes more dorsally located; frontal fontanelle intermediate between "knife-shaped" and "sole-shaped"; occipital fontanelle broadly oval-shaped; "dermosphenotic" and supraorbital bones are joined; tooth plates relatively small; premaxillary longer than vomerine (Ref. 248). Distance between occipital process and dorsal-fin base relatively large (8.3-12.4% of standard length); dorsal and anal fins (67.7-75.0% and 50.6-58.9%, respectively, of standard length) very long and sometimes partially confluent with caudal fin (Ref. 57129). Pectoral spine serrated on both sides (Ref. 248, 57129). Gill rakers long and distantly set (Ref. 248).
Coloration: fresh specimens dark brown on back; sides marked with irregular blackish spots, belly light brown to beige; a vertical bar may be present on caudal fin (Ref. 57129). Flanks with vertical rows of small white spots (Ref. 248, 57129).
Facultative air-breathing (Ref. 126274); Occurs in river systems which arise in mountainous areas and are entirely within the rain forest (Ref. 248). Very little is known about the biology, but on basis of its distribution the species appears to be restricted to the rain forest (Ref. 78218).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Teugels, G.G., 1986. A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Ann. Mus. R. Afr. Centr., Sci. Zool., 247:199 p. (Ref. 248)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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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=0.00589 (0.00354 - 0.00981), b=2.96 (2.82 - 3.10), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 3.5 ±0.5 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): Trung bình, thời gian nhân đôi của chủng quần tối thiểu là 1.4 - 4.4 năm (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
