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Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins) > Incertae sedis
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; benthopelagic; pH range: 6.3 - ? ; dH range: ? - 12. Tropical; 24°C - 28°C (Ref. 1672)

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.3 cm TL male/unsexed; (Ref. 38376); max. reported age: 4 years (Ref. 12225)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

South America: Rivers of Guyana, Suriname, French Guiana, and Amazon River basin.

Particularly abundant in coastal creeks and floodplains where it is supported by a certain salinity level. It is vulnerable to a trematode parasite which induces a characteristic cutaneous reaction. Reproduction in captivity has been successful (Ref. 12225). Maximum length questionable (Ref. 38376).

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Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. …, 2003. Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.

IUCN Red List Status (Ref. 90363)

Not Evaluated

Threat to humans

Harmless

Human uses

Aquarium: commercial

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00888 (-0.21703 - 0.23479), b=3.24 (3.12 - 3.36), based on LWR estimates for this family-BS (Ref. 93245).

Trophic Level (Ref. 69278): 3.0 ±0.4 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=4).

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

Price category (Ref. 80766): Unknown.

Hemigrammus rodwayi Durbin, 1909