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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: anosteos: From the Greek Gymnos, naked, and Otocinclus, a genus of the Hypoptopomatinae, in allusion to the extreme
reduction of the body encasing dermal plates. From the Greek anosteos, meaning boneless, in allusion to the absence of the late.
More on authors: Carvalho, Lehmann & A.Reis.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce benthopélagique. Tropical; 14°S - 15°S, 47°W - 48°W
South America: Brazil. Known only from two creeks, both tributaries to the rio Tocantinzinho, in the headwaters of the rio Tocantins basin, Goiás (Ref. 79020).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 4.4 cm SL mâle / non sexé; (Ref. 79020)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Gymnotocinclus is distinguished from all other hypoptopomatine genera by the following uniquely derived features: extreme reduction of body dermal plates; absence of the lateral connecting bone; absence of bifid hemal spines on the abdominal vertebrae posterior to the first anal-fin proximal radial; and odontode tips
on last dermal plates on the caudal peduncle dorsally or anteriorly curved. Gymnotocinclus is also distinguished
by a number of non-exclusive traits: maxillary barbel adnateto the lower lip; lateral ethmoid almost completely encapsulating the nasal organ; ventral margin of preopercle straight, not deflected medially; pectoral girdle exposed and
supporting odontodes only in a restricted lateral area near base of pectoral fin; and absence of a pectoral-fin slit (Ref. 79020).
Body shape (shape guide): elongated.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Carvalho, T.P., P. Lehmann A. and R.E. Reis, 2008. Gymnotocinclus anosteos, a new uniquely-plated genus and species of loricariid catfish (Teleostei: Siluriformes) from the upper rio Tocantins basin, central Brazil. Neotrop. Ichthyol. 6(3):329-338. (Ref. 79020)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00977 (0.00436 - 0.02192), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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0 |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |