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Characiformes (Characins) >
Hemiodontidae (Halftooths)
Etymology: Hemiodus: Greek, hemi = half + Greek, odous = teeth (Ref. 45335).
Eponymy: Dr Carl Ternetz (1870–1928) was a Swiss-born ichthyologist and naturalist who first collected near Basel (1892) and subsequently collected in South America over a period of more than thirty years (from c. [...] (Ref. 128868), visit book page.
More on author: Myers.
Issue
See Langeani (1999: 719 and Tab. 1) for some diagnostic characters and comparison with other species.
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; sötvatten bentopelagisk. Subtropical
South America: Tocantins River basin in Brazil.
Size / Vikt / Age
Könsmognad: Lm ?  range ? - ? cm
Max length : 21.5 cm SL hane/ej könsbestämd; (Ref. 125983); 25.2 cm (female); publicerad maxvikt: 244.94 g (Ref. 125983); publicerad maxvikt: 244.94 g
Short description
Bestämningsnycklar | Morfologi | Morfometri
Dorsal fin plain, with no blotches; longitudinal stripe starting point behind the eye.
Body shape (shape guide): elongated.
Iteroparous synchronous spawner (Ref. 51777).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Distinct pairing (Ref. 205).
Langeani, F., 1999. New species of Hemiodus (Ostariophysi, Characiformes, Hemiodontidae) from the Rio Tocantins, Brazil, with comments on color patterns and tooth shapes within the species and genus. Copeia 1999(3):718-722. (Ref. 31397)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00508 - 0.01300), b=3.23 (3.09 - 3.37), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 2.7 ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
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