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Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Distichodus: Greek, di = two + Greek, stix, stichos = line, row (Ref. 45335); kasaiensis: The species is named after the Kasai River to which it appears to be endemic; an adjective (Ref. 122092).
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt Sống nổi và đáy. Tropical
Africa: Kasai River, Congo River basin, in Democratic Republic of the Congo and Angola (Ref. 122092).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?  range ? - ? cm
Max length : 22.6 cm SL con đực/không giới tính; (Ref. 122092)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 0; Các vây lưng mềm (tổng cộng) : 27 - 29; Tia cứng vây hậu môn: 0; Tia mềm vây hậu môn: 12 - 13. Diagnosis: Distichodus kasaiensis is distinguished from D. affinis, D. altus, D. decemmaculatus, D. noboli, D. notospilus and D. teugelsi by the higher number of lateral line scales, 57-65 vs. 37-46; from D. antonii by the inferior mouth vs. terminal, the higher number of dorsal-fin rays, 27-29 vs. 21-25, and the lower number of dark vertical bars, 6-8 vs. 9-14; from D. fasciolatus by the higher number of dorsal-fin rays, 27-29 vs. 24-26, and the lower number of dark vertical bars, 6-8 vs. 13-20; from D. langi by the lower number of lateral line scales, 57-65 vs. 68-70, and the lower number of vertical bars, 6-8 vs. 13; from D. lusosso by the inferior mouth vs. terminal, and the short snout vs. elongated; from D. maculatus by the absence of dark blotches all over the body; and from D. sexfasciatus by the higher number of dorsal-fin rays, 27-29 vs. 24-25, the higher number of teeth in the outer row of the upper and lower jaw, 15-25 and 16-26 vs. 12-14 on both jaws, and the greenish body colouration vs. orange-reddish (Ref. 122092). It is distinguished from its most similar species D. atroventralis by having more dorsal-fin rays, 27-29 vs. 22-24, fewer teeth on the upper jaw, 15-25 vs. 18-36 (overlap due to positive allometry), and a longer dorsal-fin base, 24.9-33.7% of standard length vs. 20.1-28.8% (overlap due to positive allometry); and from D. ingae by having fewer lateral line scales, 57-65 vs. 69-73, more dorsal-fin rays, 27-29 vs. 26, and a smaller prepectoral distance, 21.4-30.0% of standard length vs. 29.1-30.2% (overlap due to negative allometry) (Ref. 122092).
Life cycle and mating behavior
Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng
Moelants, T., J. Snoeks and E. Vreven, 2018. Distichodus kasaiensis and D. ingae, two new distichodontid species (Characiformes: Distichodontidae) from the Congo basin. Ichthyol. Explor. Freshwat. 28(2):177-192. (Ref. 122092)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Fishing Vulnerability (Ref.
59153): Low vulnerability (18 of 100).