Classificação / Nomes
Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce pelágico(a,os,as). Tropical
South America: major river systems of the central and western portions of the Amazon basin including the Amazonas- Solimões, Purus, Madeira and Ucayali rivers.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 3.1 cm SL macho/indeterminado; (Ref. 38376)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Raios dorsais (total) : 9 - 10; Raios anais : 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).
Body shape (shape guide): fusiform / normal.
Found in marginal areas of rivers and streams, often over sandy substrates and in still backwaters (Ref. 109753).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
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)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: pesca de subsistência
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00500 - 0.03479), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 2.6 ±0.5 se; based on size and trophs of closest relatives
Vulnerabilidade da pesca (Ref.
59153): Low vulnerability (10 of 100).
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