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Acentronichthys leptos Eigenmann & Eigenmann, 1889

Image contributors to this species:

Ivan Sazima (1) Diogo Luiz (1) Kiruya Momochi (3)

ScotCat Sources:

Other Sources:

Relevant Information:

Habitat:: A. leptos is a demersal (living at or near the bottom of the water body) species that inhabits streams. Occurs in small coastal creeks and streams with submerged roots and vegetation debris. Etymology: The genus name Acentronichthys: a-, without and centron, thorn or spine, referring to spineless dorsal and pectoral fins; ichthys, fish. The specific name leptos: Fine or thin, referring to the extremely elongate body.

Common Name:

None

Synonyms:

Heptapterus leptos

Family:

Heptapteridae

Distribution:

South America: Coastal streams from Rio de Janeiro to Santa Catarina State, and in São Mateus, in Espírito Santo State, Brazil. Type Locality: Sao Matheos [=São Mateus, State of Espírito Santo, Brazil].

Size:

11.0cm. TL (4½ins)

Temp:

22-25°C (71-77°F)

p.H.

6.0-7.5.

IUCN Red List

Although it is possible that it is a species complex, Acentronichthys leptos was assessed as a single specific entity due to its wide distribution (from Santa Catarina to northern Rio de Janeiro and northern Espírito Santo, above the mouth of the Doce River to southern Bahia). However, the high degree of degradation of the basins where it occurs imposes diffuse threats on the different subpopulations of the species, which cannot yet be quantified but must be monitored. As current knowledge of these threats does not indicate a risk of extinction, Acentronichthys leptos was listed in the Least Concern (LC) category, (IUCN 2022).

Reference:

Bockmann, F.A. and G.M. Guazzelli, 2003. Heptapteridae (Heptapterids). p. 406-431. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.
Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Froese, R. and D. Pauly. Editors. 2024. FishBase. World Wide Web electronic publication. www.fishbase.org, ( 07/2024 ).
Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio). 2022. Acentronichthys leptos. The IUCN Red List of Threatened Species 2022.

Family: Heptapteridae Back to Ident-A-Cat Click on Thumbnails

Acentronichthys leptos

Acentronichthys leptos
Tinguá, Nova Iguaçu - RJ, Brasil

Acentronichthys leptos

Acentronichthys leptos
Head view

Acentronichthys leptos
Dorsal view

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