Classification / Names
Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce pelagico. 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.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.1 cm SL maschio/sesso non determinato; (Ref. 38376)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Raggi dorsali molli (totale) : 9 - 10; Raggi anali molli: 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
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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: Version 2024-2)
Threat to humans
Harmless
Human uses
Pesca: pesca di sussistenza
Strumenti
Special reports
Download XML
Fonti Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00511 - 0.03560), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.6 ±0.5 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
