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> Characiformes (Characins) > Characidae (Characins; tetras) > Cheirodontinae
Etymology: More on author: Vari.

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

; agua dulce pelágico. Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

South America: major river systems of the central and western portions of the Amazon basin including the Amazonas- Solimões, Purus, Madeira and Ucayali rivers.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.1 cm SL macho / no sexado; (Ref. 38376)

Short description Morfología | Morfometría

Radios blandos dorsales (total): 9-10; Radios blandos anales: 47 - 51. Protocheirodon pi can be distinguished by possessing four synapomorphies proposed for the Cheirodontinae by Malabarba (1998): presence of a pseudotympanum, a hiatus in the body wall musculature lateral to at least a portion of the anterior chamber of the swimbladder; absence of dark humeral spot; possession of pedunculate dentition; and presence of only a single row of regularly arranged premaxillary teeth. It differs from all species of the Cheirodontinae and indeed members of the Characiformes by the unique form of the swimbladder which has a smaller rotund anterior chamber and the posteriorly chamber elaborated into two vertically elongate, side by side, slightly inclined chambers. These modifications resulted to a unique overall pi (?)-shaped structure (Ref. 109753).

Found in marginal areas of rivers and streams, often over sandy substrates and in still backwaters (Ref. 109753).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Main reference Upload your references | Referencias | Coordinador | Colaboradores

Vari, R.P., B.F. Melo and C. Oliveira, 2016. Protocheirodon, a new genus of Characidae (Teleostei; Characiformes) with the redescription of the poorly known Protocheirodon pi. Neotrop. Ichthyol. 14(2):1-7. (Ref. 109753)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 30 October 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Ecología
Dieta
componentes alimenticios
consumo de alimento
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Madurez
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Fecundidad
Huevos
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Length-length
Length-frequencies
Morfometría
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Larva
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Fuentes de Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01380 (0.00540 - 0.03529), b=3.07 (2.86 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 2.6 ±0.5 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).

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

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Protocheirodon pi (Vari, 1978)