Raiamas salmolucius : fisheries

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Raiamas salmolucius (Nichols & Griscom, 1917)

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Raiamas salmolucius
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Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Danionidae (Danios) > Chedrinae
Etymology: .salmolucius: The species name salmolucius is derived from the Latin salmo, meaning salmon, and the Latin lucius, meaning pike, and refers most probably to its general appearance (Ref. 122357)  More on authors: Nichols & Griscom.

Environment: milieu / climate zone / depth range / distribution range Οικολογία

; Γλυκού νερού βενθοπελαγικό; pH range: 7.4 - 8.0; εύρος βάθους - m (Ref. ), usually - m (Ref. ).   Tropical; 21°C - 28°C (Ref. 122357)

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Africa: restricted to main channel and the tributaries of the northern hemisphere of the Middle Congo basin, where it is widespread throughout the Aruwimi, Itimbiri, Tshopo, Lindi, Ubangi and Sangha rivers (Ref. 122357). Reports from Lower Congo (Ref. 57537) and Kasai River basin (Ref. 41591) refer to Raiamas brachyrhabdotos (Ref. 122357).

Μέγεθος / Βάρος / Age

Maturity: Lm ?  range ? - ? cm
Max length : 16.4 cm SL αρσενικό/απροσδιόριστο; (Ref. 122357)

Short description Μορφολογία | Μορφομετρία

Ραχιαίες άκανθες (συνολικά): 0; Μαλακές ραχιαίες ακτίνες (συνολικά): 12; Εδρικές άκανθες 0; Μαλακές εδρικές ακτίνες: 16 - 17; Σπόνδυλοι: 38 - 40. Diagnosis: Within the Congo basin, Raiamas salmolucius is distinguished from R. batesii, R. kheeli and R. moorii by a lower number of lateral line scales, 42-46 vs. 68-70, 65-68 and 54-61 respectively; from R. longirostris by a greater head width, 36-43% of head length vs. 31%, a longer anal-fin base, 16.1-20.5% of standard length vs. 14.8%, and a deeper body, 19.8-23.3% of standard length vs. 16.5%; from R. buchholzi and R. christyi by the absence of a large dark spot at the base of the caudal fin vs. presence, and a longer dorsal-fin base, 14.1-14.9% of standard length vs. 10.1-12.0% and 10.4-11.6% respectively (Ref. 122357). Further, it is distinguished from the phenotypically similar species R. marqueti, R. intermedius and R. brachyrhabdotos by a longer head, 30.2-33.6% of standard length vs. 27.0-30.1%, 27.1-29.5% and 28.5-29.5% respectively; in addition, R. salmolucius is distinguished from R. marqueti by a shorter distance between the nostril and the eye, 5-6% of head length vs. 6-7%, overlap due to negative allometry, and the first two pigmented bars behind the pectoral fin being narrow and covering 1.5-2.0 lateral line scales vs. wide bars covering 2.5-3.0 lateral line scales, and from R. intermedius and R. brachyrhabdotos by a shallower body, 19.8-23.4% of standard length vs. 25.2-28.8% and 23.6-29.8% respectively, and a more or less horizontal predorsal profile vs. a convex predorsal profile (Ref. 122357). Outside the Congo basin, R. salmolucius is distinguished from all other species, except R. ansorgii, R. nigeriensis and R. senegalensis, by an intermediate number of lateral line scales, 42-46 vs. 36-38 in R. levequei, 58-63 in R. scarciensis and 39-42 in R. steindachneri; from R. ansorgii by a dorsal fin inserted slightly behind the insertion of pelvic fin, i.e. two or three lateral line scales between verticals through the anterior base of the dorsal fin and the pelvic-fin insertion vs. dorsal fin inserted well behind pectoral-fin origin, i.e. six lateral line scales; from R. nigeriensis by a longer head, 30.2-33.6% of standard length vs. 18.6-25.0%; and from R. senegalensis by a higher number of branched dorsal-fin rays, 9 vs. 8 (Ref. 122357).

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Found in river over a sandy substrate (Ref. 122357).

Life cycle and mating behavior Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Katemo Manda, B., J. Snoeks, A. Chocha Manda and E. Vreven, 2018. Hidden species diversity in Raiamas salmolucius (Teleostei: Cyprinidae) from the Congo basin: two new species based on morphometric evidence. Ichthyol. Explor. Freshwat. 28(4):345-363. (Ref. 122357)

IUCN Red List Status (Ref. 124695)

  Least Concern (LC) ; Date assessed: 01 May 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

αλιεία:
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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00282 - 0.01229), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  3.3   ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref. 120179):  Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (32 of 100) .
Price category (Ref. 80766):   Unknown.