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Characiformes (Characins) >
Erythrinidae (Trahiras)
Etymology: Hoplias: Greek, hoplon = weapon (Ref. 45335); cazumba: Name 'cazumba' in reference to a mythical creature of the bumba-meu-boi, a Maranhão folklore, known to protect the nature. A noun in apposition.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical
South America: Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 24.1 cm SL hane/ej könsbestämd; (Ref. 137974)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 11 - 13; Mjukstrålar i analfenan: 8 - 10; Ryggkotor: 39 - 41. This species is distinguished from its congeners by the following set of characters: medial margins of contralateral dentaries converging to midline forming a V or Y-shaped angle in ventral view; dorsal-fin rays 11-13, anal-fin rays 8-10, caudal-fin rays 15, lateral-line scales 39-41, scales around caudal peduncle 19-22, pre-dorsal scales 15-17, vertebrae 39-41; greater snout length 25.3%-29.8% HL, lower snout width 21.4%-26.8% HL and lower snout depth 14.8%-21.1%; longitudinal series of scales between lateral line and pelvic-fin origin 4-5; dorsal-fin length 28.5%-33.4% HL; and pre-nasal length 16%-20.2% HL (Ref. 137974).
Body shape (shape guide): elongated; Cross section: compressed.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Abreu, J.M.S., W.S. Pedroza, O.T. Oyakawa, S.D.A.M. Melo, L. Tchaicka and N.M. Piorski, 2025. A new species of Hoplias malabaricus species complex (Characiformes, Erythrinidae) from Northeastern Brazil. Evolutionary Systematics 9:135-143. (Ref. 137974)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: saknar intresse
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Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00304 - 0.01503), b=3.12 (2.93 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Low vulnerability (19 of 100).
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