Physopyxis lyra is a species of thorny catfish found in the Essequibo and Amazon basins. It occurs in the countries of Brazil, Colombia, Guyana and Peru. This species grows to a length of 3.5 centimetres (1.4 in) SL. This species prefers to live amongst submerged organic debris.
- Froese, Rainer, and Daniel Pauly, eds. (2011). "Physopyxis lyra" in FishBase. December 2011 version.
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