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Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Myleinae
Etymology: siderocarajensis: The specific name is in allusion to the locality `Serra and Carajás', the largest high-grade iron deposit in the world. Derived from the Greek‒Latin sidero means `iron', and carajensis in reference to the type locality. A toponymic adjective..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico. Tropical
South America: ItacaiuÂnas River and Catete River, Tocantins-Araguaia River Basin, State of Para, Brazil.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 35.2 cm SL macho/indeterminado; (Ref. 116762)
Descrição suscinta
Morfologia | Morfometria
Vértebras: 42. Tometes siderocarajensis can be diagnosed from all its congeners by dense pigmentation on the distalmost portion of the pelvic-fin rays or the entirety of the fin (vs. pelvic fin hyaline or pale, or with few scattered dark chromatophores along distal portion of rays). In addition, it differs from all congeners, except from T. camunani and T. kranponhah, by having more circumpeduncular scale rows 39?41 (vs. 38 or less), and from T. kranponhah and T. trilobatus by having 1st and 2nd labial premaxillary teeth laterally spaced (vs. 1st and 2nd labial premaxillary teeth with lateral contact). It is further distinguished from T. trilobatus by having more perforated lateral line scales 74±84 (vs. 58±72); from T. makue by having more spines on ventral keel 11±17 prepelvic spines and 26±33 total spines (vs. 0±9 and 10±23, respectively); and from T. lebaili by having a terminal to gently upturned mouth and invariably 5 dentary teeth (vs. a markedly upturned mouth and 6±7 dentary teeth) (Ref. 116762).
Inhabits rapids associated with rocky outcropping covered in aquatic macrophytes of the families Podostemaceae and Fabaceae, which serve as a food source for this fish. The stomach contents of one large specimen measuring 34.0 cm SL consisted mainly of large pieces of Podostemaceae (leaves and flowers), but also comprised of three small Fabaceae fruits and a cricket (Orthoptera). Occurs syntopically with three other serrasalmid, rapids-adapted species, namely, Mylesinus paucisquamatus, Myleus setiger, and Tometes ancylorhynchus. Commonly captured by local, professional and amateur fishermen in the Itacaiúnas River. One of the most in demand species for game fishing in the region based on fishermen report (Ref. 116762).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Andrade, M.C., V.N. Machado, M. Jégu, I.P. Farias and T. Giarrizzo, 2017. A new species of Tometes Valenciennes 1850 (Characiformes: Serrasalmidae) from Tocantins-Araguaia River Basin based on integrative analysis of molecular and morphological data. Plos ONE 12(4):e0170053. (Ref. 116762)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Peixe esportivo: sim
Mais informação
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ReferênciasAquaculturaPerfil para aquaculturaEstirpesGenéticaElectrophoresesHereditariedadeDoençasProcessamentoNutrientsConversão de massa
ColaboradoresFotosStamps, Coins Misc.SonsCiguateraVelocidadeTipo de nataçãoÁrea branquialOtólitosCérebrosVisão
Ferramentas
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02291 (0.01040 - 0.05047), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (33 of 100).
