Classificatie / Names
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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
Ecologie
; zoet water demersaal. Tropical
South America: Córrego Juruba and ribeirão Agua dos Oito of the rio Tibagi basin in Brazil.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 9.0 cm SL mannelijk / geslacht onbekend; (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 ).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 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).