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  • Sorubim trigonocephalusRecently caught museum species
  • Sorubim trigonocephalusHolotype
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Scientific Name Sorubim trigonocephalus    Miranda Ribeiro, 1920
Common Name
Type Locality Arinos River, downstream from the mouth of Preto River, Juruena drainage, Tapajós basin, Porto Velho, Diamantino, Mato Grosso, Brazil, 14°05'32.25"S, 56°19'26.44"W.
Pronunciation sarw oo bim - tri gon oh cef al us.
Etymology Sorubi is the Brazilian local name for this fish (and several other pimelodids), latinised to become Sorubim. This specific epithet refers to its triangular-shaped (trigono=three-sided) head (cephalus=head).
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Size 507mm or 20" SL. Find near, nearer or same sized spp.
Identification No other pimelodid genus possesses a dark horizontal stripe stretching entire length of head and body.
General Remarks Sorubim trigonocephalus was described in 1920 by Alípio de Miranda Ribeiro, based on a single specimen collected in a locality identified as “Porto Velho”. However, in their 2016 paper, O'Hara & Neuhaus correct a nearly century old confusion and determine the type locality of this species in the Arinos River in the Tapajós basin and extend it's range to include the Xingu.
Hop to next section Habitat Information
Distribution South America: Madeira and Tapajós River basins, two Amazon tributaries.
Amazon, Lower Amazon, Tapajós (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Madeira (click on these areas to find other species found there)
Amazon, Lower Amazon, Xingu (click on these areas to find other species found there)

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IUCN Red List Category
Least Concern
, range map and more is available on the IUCN species page. Last assessed 2018.
Hop to next section Husbandry Information
Breeding Unreported in the aquarium.
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference Peixes (excl. Characinidae) No. 58 (Annexo 5), pp 12, Unnum. Pls. 10-11.
Registered Keepers There is no registered keeper.
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Last Update 2025 Jan 01 12:21 (species record created: 2007 Apr 20 09:39)