Actinopteri (ray-finned fishes) > 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).
More on authors: Costa & Brasil.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; non-migratory. Tropical
South America: Jaguaribe and Mossoró River basins in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.0 cm TL male/unsexed; (Ref. 27139); 5.0 cm SL (female)
Morphology | Morphometrics
soft rays: 18 - 21;
Vertebrae: 35 - 36. Males with broad basihyal. Neurocranium wide. Ventral opercular neuromasts 6-11; supraorbital neuromasts 26-30. Slightly pointed snout. Anal-fin base without scales and distal part of anal fin of males with long filamentous re rays. Dorsal-fin rays 17-19 in males, 15-17 in females; anal-fin rays 19-21 in males, 18-19 in females; caudal fin rays 30. Caudal and pectoral fin rounded. Snout gently pointed with lower jaw not elongated (Ref. 40938).
Bottom spawner, ? months incubation (Ref. 27139).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00394 - 0.02017), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .