Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Characiformes
(Characins) > Crenuchidae
(South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); heirmostigmata: From the Greek heirmos (series) and stigmata (plural of stigma = marks), in reference to the series of black marks present on the body sides.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?
South America: known only from rio Abelha, rio Barra Grande and rio Nestor of the upper rio Paraná basin in Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.4 cm SL male/unsexed; (Ref. 74998)
Morphology | Morphometrics
soft rays: 10 - 11;
Vertebrae: 34. Distinguished from all members of the genus Characidium, except Characidium serrano (upper rio Uruguai basin), in having 8-11 incomplete oblique bars on body sides, extending upwards and downwards from the lateral line and independent of the 8 or 9 dorsal transverse bars which usually are present in Characidium species. Can be differentiated from Characidium serrano in having a wider body width (12.2-15.7%) and lower number of perforated scales on lateral line (32-35) vs. 8.7-11.1% in SL and 37-39 scales in Characidium serrano (Ref. 74998).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
da Graça, W.F. and C.S. Pavanelli, 2008. Characidium heirmostigmata, a new characidiin fish (Characiformes: Crenuchidae) from the Upper Rio Paraná basin, Brazil. Neotrop. Ichthyol. 6(1):53-36. (Ref. 74998)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [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), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .