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> Siluriformes (Catfishes) > Loricariidae (Armored catfishes) > Hypoptopomatinae
Etymology: calvus: From the Latin adjective calvus, meaning bald, in allusion to the area on the head without odontodes.
Eponymy: Dr Isaäc J H Isbrücker (d: 1944) is a Dutch ichthyologist who is an expert on the taxonomy of South American armoured catfishes (Callichthyidae, Loricariidae). [...] (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ökologie

; süßwasser demersal. Tropical

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South America: Córrego Juruba and ribeirão Agua dos Oito of the rio Tibagi basin in Brazil.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 9.0 cm SL Männchen/unbestimmt; (Ref. 57731)

Found usually along the bottom among rocks and stones, just under small waterfalls, of a small creek flowing through a landscape of mixed open field, riparian vegetation and forest, sometimes with a very degraded margin. The stream has rocky bottom, with small to medium-sized rocks, loose stones and gravel and some small pools along the streams with sand and mud on the bottom (Ref. 57731 ).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Jerep, F.C., O.A. Shibatta, E.H.L. Pereira and O.T. Oyakawa, 2006. Two new species of Isbrueckerichthys Derijst, 1996 (Siluriformes: Loricariidae) from the rio Paranapanema basin, Brazil. Zootaxa 1372:53-68. (Ref. 57731)

IUCN Rote Liste Status (Ref. 130435: Version 2024-1)

nicht bedroht (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02138 (0.00778 - 0.05875), b=2.93 (2.70 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Isbrueckerichthys calvus Jerep, Shibatta, Pereira & Oyakawa, 2006