| Platynematichthys notatus | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Family: | Pimelodidae |
| Tribe: | Brachyplatystomatini |
| Genus: | Platynematichthys Bleeker, 1858 |
| Species: | P. notatus |
| Binomial name | |
| Platynematichthys notatus (Jardine and Schomburgk in Schomburgk, 1841) |
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| Synonyms | |
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Platynematichthys notatus is a species of catfish (order Siluriformes) of the monotypic genus Platynematichthys of the family Pimelodidae.[1] This species reaches about 80 centimetres (31 in) SL and originates from the Amazon and Orinoco River basins.[2]
Platynematichthys and its sister group Brachyplatystoma are the only genera in the tribe Brachyplatystomatini. These two genera are characterized by two synapomorphies; these include a gas bladder divided into an anterior portion and a triangular posterior portion, as well as a ventral crest under the cleithrum, the main bone supporting the pectoral fins.[3]