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Scientific Name Physopyxis ananas  Sousa & Rapp Py-Daniel, 2005
Common Name
Type Locality Rio Jutai, rio Solimões basin, 2°45'40"S, 66°47'59"W, Amazonas State, Brazil.
Hop to next section Species Information
Size 22mm or 0.9" SL. Find near, nearer or same sized spp.
Identification Physopyxis can be distinguished from the other Doradidae by the miniature size (adults generally less than 31 mm SL) and a unique combination of additional features: extreme development of the exposed pectoral girdle; well developed coracoid process longer than the postcleithral process; anterior plate of the nuchal shield absent; dorsal spine serrated only along the basal portion of its anterior margin; two infraorbital bones in young that become fused into a single plate in adult specimens; pectoral spine reaching to base of anal fin.
Hop to next section Habitat Information
Distribution South America: throughout the lowlands in the entire Amazon (including rio Negro) and rio Essequibo basins.
Amazon, Upper Amazon, Jutai (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Negro (click on these areas to find other species found there)
Guyana Waters, Coastal Rivers of Guyanas, Essequibo (click on these areas to find other species found there)
Amazon (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 2020.
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 Neotropical Ichthyology v. 3 (no. 4), pp 630, Figs. 5, 8c.
Registered Keepers There is no registered keeper.
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Last Update 2020 Oct 18 06:53 (species record created: 2011 Sep 24 09:28)