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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Trichomycterinae
Etymology: Cambeva: Probably derived from the Tupi-Guarani, is a popular name for trichomycterid fishes in southern and south-eastern Brazil (Ref. 119381); diffusa: Name from Latin 'diffusa', referring to the color pattern of the species which have diffiuse grey spots, general coloration is lighter compared to its close related congeners.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Tropical
Distribution
Territoires | Zones FAO | Écosystèmes | Occurrences | Carte par point | Introductions | Faunafri
South America: Brazil.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 1.1 cm SL mâle / non sexé; (Ref. 129458)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 7; Épines anales: 2; Rayons mous anaux: 5. This species is distinguished from all its congeners in the C. balios complex by the following characters: with a lighter general colouration, highly differing by the presence of a great concentration of small dark brownish grey dots in a superficial skin layer, contrasting with rounded diffuse pale grey spots, almost inconspicuous, in a deeper layer (vs. never a similar colouration); similar to C. pericoh and differs from C. balios in having a slightly posteriorly folded extremity of the dorsal process of the opercle (vs. unfolded), a narrow postero-dorsal projection on the preopercle (vs. no projection), and branchiostegal rays 8 (vs. 9); differs from C. pericoh in having more dorsal procurrent caudal-fin rays 17 (vs. 13 or 14), fewer ribs 12 (vs. 15), and opercular and interopercular postero-dorsal odontodes distinctively wider and more curved than other odontodes (vs. opercular and interopercular posterodorsal odontodes only slightly wider and more curved than other odontodes) (Ref. 129458).
Cross section: oval.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Costa, W.J.E.M., C.R.M. Feltrin and A.M. Katz, 2021. Field inventory reveals high diversity of new species of mountain catfishes, genus Cambeva Katz, Barbosa, Mattos & Costa, 2018 (Siluriformes: Trichomycteridae), in south-eastern Serra Geral, southern Brazil. Zoosystema 43(art.28):659-690. (Ref. 129458)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00337 - 0.01709), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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