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> Siluriformes (Catfishes) > Heptapteridae (Three-barbeled catfishes)
Etymology: Brachyrhamdia: Greek, brachys, -eia = shor + Brazilian vernacular name, Nhamdia/Jamdia (Ref. 45335); thayeria: Name refers to Thayeria Eigenmann (1908), a genus of South American characin that has a similar diagonal dark stripe on the caudal peduncle. Also named for Nathaniel Thayer Jr., a North American businessman and philanthropist (Ref. 094149).

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

; süßwasser demersal. Tropical

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South America: Brazil.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 5.4 cm SL Männchen/unbestimmt; (Ref. 94149)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

This species can be distinguised from all its congeners by a dark brown stripe at caudal region extending transversely from region immediately below middle of adipose-fin base to the base of the ventral caudal-fin lobe. Differs from B. rambarrani by the having the supraoccipital process nearly triangular (vs. roughly rectangular). Also differs from B. heteropleura, B. marthae, and B. meesi by the following set of characters: 35-36 vetebrae (vs. 37-39), and absence of dark lateral band along the trunk (vs. distinct stripe in B. marthae and B. meesi, and faint stripe in B. heteropleura) (Ref. 94149).

Prefers small streams not prone to flooding and is associated with marginal vegetation or along sandy beaches in shallow streams (ca. 1 m depth), with sandy or silt bottom substrate (Ref. 94149).

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator : Bockmann, Flavio | Partner

Slobodian, V. and F.A. Bockmann, 2013. A new Brachyrhamdia (Siluriformes: Heptapteridae) from Rio Japurá basin, Brazil, with comments on its phylogenetic affinities, biogeography and mimicry in the genus. Zootaxa 3717(1):001-022. (Ref. 94149)

IUCN Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 05 November 2020

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 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00776 (0.00362 - 0.01664), b=2.98 (2.80 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

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

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Brachyrhamdia thayeria Slobodian & Bockmann, 2013