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Characiformes (Characins) >
Crenuchidae (South American darters) > Characidiinae
Etymology: Characidium: Diminutive of Charax, -akos = a fish without identification (Ref. 45335).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique. Tropical
South America: known only from the type locality in the headwaters of Caraguatá River, upper Uruguay River drainage.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 5.1 cm SL mâle / non sexé; (Ref. 36884)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 0; Rayons mous dorsaux (Total) : 11 - 13; Épines anales: 0; Rayons mous anaux: 7 - 9. Roundish black marks on the pelvic, dorsal and anal fins; a black band along the distal margin of anal and pelvic fins; a black band along the distal margin of anal and pelvic fins in adult males (band also present but fainter and narrower in juveniles and females); enlarged anal fin with rounded distal profile in adult males; fins brightly colored with orange or red chromatophores in live adult males; reduction of adipose fin, which may be very small or even absent; lateral line complete or at least extending well beyond the 12th scale of series.
Body shape (shape guide): fusiform / normal; Cross section: oval.
In a small river at 650 m altitude.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Buckup, P.A. and L. Hahn, 2000. Characidium vestigipinne: a new species of Characidiinae (Teleostei, Characiformes) from Southern Brazil. Copeia 2000(1):150-155. (Ref. 36884)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Niveau trophique (Réf. 69278) |
3.4 ±0.3 se; based on size and trophs of closest relatives |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |