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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335); itarare: Name 'itarare' from the tupi word meaning 'stone carved by the water', in allusion to the underground rivers in the region. Also in reference to the type locality of the species, Rio Itararé basin. Noun in apposition.
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
; agua dulce bentopelágico. Tropical
South America: Brazil.
Tamaño / Peso / Age
Madurez: Lm ? range ? - ? cm
Max length : 5.3 cm macho / no sexado; (Ref. 133152)
Short description
Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 8 - 9; Radios blandos anales: 6. This species is distinguished from its congeners by the following set of characters: scaled isthmus; secondary bars absent; dark-brown, vertically elongated middorsal blotches that lack pigmentation in their central region, appearing diamond-like (larger specimens) and diamond-like blotches, vertically elongated and fully pigmented (smaller specimens); black chromatophores in caudal fin; roundish black marks on the pelvic absent, dorsal and anal fins; tricuspid dentary teeth present; peduncular blotch absent; white gap between posterior edge of the opercle and the humeral blotch absent; longitudinal stripe in the mid-lateral region of body ending in peduncle caudal; pre-orbital stripe present; area between pelvic fin and origin of anal fin straight in lateral view (Ref. 133152).
Body shape (shape guide): elongated; Cross section: compressed.
This species is found in steams with clear water and substrate composed of sand and small pebbles (Ref. 133152).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Stabile, B.H.M., R.B. dos Reis, A. Frota, W.J. da Graça and A.V. de Oliveira, 2024. Morphology and molecular evidence of a new species of Characidium (Characiformes: Crenuchidae) from the edges of a protected area at Rio Itararé, upper Rio Paraná, southern Brazil. J Fish Biol. 105:1850-1861. (Ref. 133152)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesquerías: sin interés
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Nivel trófico (Referencia
69278): 3.5 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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