Classification / Names
Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Cynolebias: Greek, kyon = dog + Greek, odous = teeth + Greek, lebias = a kind of small fish (Ref. 45335); rectiventer: Dervied from the Latin rectus, meaning straight, and venter, meaning belly. This is in reference to the straight ventral profile of the body in males, a condition unique in Cynolebias.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce démersal; profondeur 1 - ? m (Ref. 97357). Tropical
South America: Verde River floodplain, São Francisco River Basin in Brazil.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 10.2 cm SL mâle / non sexé; (Ref. 97357); 8.1 cm SL (female)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Rayons mous dorsaux (Total) : 15 - 20; Rayons mous anaux: 18 - 21; Vertèbres: 35 - 37. Cynolebias rectiventer can be diagnosed from all species of C. perforatus group by the following characters: contact organs restricted to the seven uppermost rays of the pectoral fin in males (vs. contact organs on all rays); ventral process on the autopalatine present (vs. absent); scales absent on the base of the dorsal fin (vs. present); gill rakers slightly curved (vs. bowed); denticles situated on the gill-raker margin (vs. on the entire region); less than one third of caudal fin anteriorly covered by scales (vs. more than one third). It also differs from all congeners by having approximately straight lateral profile of the abdominal region in males (vs. convex) (Ref. 97357).
Found in two adjacent and shallow temporary lagoons of about 1.0 m deep with an area of about 5 km2, within a small farm for cattle breeding, and with sparse aquatic vegetation. Collected close to the lagoon bottom (Ref. 97357).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Costa, W.J.E.M., 2014. Six new species of seasonal killifishes of the genus Cynolebias from the São Francisco river basin, Brazilian Caatinga, with notes on C. porosus (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 25(1):79-96. (Ref. 97357)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-2)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
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=0.00891 (0.00396 - 0.02008), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
