Limits RegistryPUBLIC RECORD
Limits RegistryPaedophryne amauensis, a frog discovered in Papua New Guinea in 2009, holds the record for smallest known vertebrate, with adult males measuring as small as 7.7 mm in body length — smaller than a housefly, and edging out the previously recognized smallest vertebrate, the fish Paedocypris progenetica (about 7.9 mm).
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Paedophryne amauensis, a frog discovered in Papua New Guinea in 2009, holds the record for smallest known vertebrate, with adult males measuring as small as 7.7 mm in body length — smaller than a housefly, and edging out the previously recognized smallest vertebrate, the fish Paedocypris progenetica (about 7.9 mm).
The shortest confirmed adult body length among vertebrate species, measured snout-to-vent in the smallest mature individuals, as documented in peer-reviewed taxonomic literature.
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1 accepted Claim, with 1 linked evidence records.
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Limits Registry. LR-SMALLEST-KNOWN-VERTEBRATE-SPECIES. Smallest known vertebrate species by body length. 2026.