Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Characiformes
(Characins) > Crenuchidae
(South American darters) > Characidiinae
Etymology: Odontocharacidium: Greek, odous = teeth + Greek, charax, -akos = a fish without identification, diminutive (Ref. 45335); varii: Named for Richard P. Vari; noun in genitive.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
South America: upper protion of Río Orinoco.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.0 cm TL male/unsexed; (Ref. 122685)
Morphology | Morphometrics
soft rays: 5 - 7;
Vertebrae: 32. This species is distinguished from Odontocharacidium aphanes by the following characters: presence of the antorbital (vs. absence in O. aphanes); presence of the supraorbital laterosensory canal (vs. absence); presence of postcleithrum 1 (vs. absence);
presence of conspicuous bars extending ventrally to the middle portion of the body (vs.
bars restricted to the dorsal part of the body); presence of two dark round blotches located at the tip of caudal peduncle (vs. blotches absent) (Ref. 122685).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Queiroz Rodrigues, E. K. de and A.L. Netto-Ferreira, 2020. A new miniature species of Odontocharacidium (Characiformes: Crenuchidae) from the Río Orinoco basin, Venezuela. Neotropical Ichthyology 18(2)1-11. (Ref. 122685)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.0 ±0.2 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .