Brazilian gold frog

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Brazilian gold frog
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Brachycephalidae
Genus: Brachycephalus
Species: B. didactylus
Binomial name
Brachycephalus didactylus
(Izecksohn, 1971)
  • Psyllophryne didactyla Izecksohn, 1971[2]

The Brazilian gold frog (Brachycephalus didactylus), also known as Izecksohn's toad[3] or flea-frog,[1] is species of frogs in the family Brachycephalidae. It is endemic to southeastern Brazil and is known from the central part of the state of Rio de Janeiro and from Serra das Torres in extreme southern Espírito Santo.[3] It is among the smallest frog in the Southern Hemisphere.

Adult Brazilian gold frogs measure to only 9.6–9.8 mm (0.38–0.39 in) in body length. Many have a beautiful golden color, which explains their common name.

Comparison with other small frog species[edit]

The smallest frog species is Paedophryne amauensis of Papua New Guinea, described in 2012.[4] The smallest frogs of the Northern Hemisphere are the Cuban Eleutherodactylus iberia, which is similar in size, and Eleutherodactylus limbatus, of which fully mature adults as small as 8.5 mm have been found, though more typically 8.5 to 12 mm.

A relative comparison of the world's smallest frogs


  1. ^ a b Telles, Ana Maria & Potsch de Carvalho-e-Silva, Sergio (2004). "Brachycephalus didactylus". IUCN Red List of Threatened Species. IUCN. 2004: e.T54452A11148997. doi:10.2305/IUCN.UK.2004.RLTS.T54452A11148997.en. Retrieved 1 May 2018.
  2. ^ Izecksohn, E. (1971). "Novo genero e novo especie de Brachycephalidae do estado do Rio de Janeiro, Brasil (Amphibia: Anura)". Boletim do Museu Nacional. Nova Serie, Zoologia. 280: 1–12.
  3. ^ a b c Frost, Darrel R. (2018). "Brachycephalus didactylus (Izecksohn, 1971)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 1 May 2018.
  4. ^ Rittmeyer, E. N.; Allison, A.; Gründler, M. C.; Thompson, D. K. & Austin, C. C. (2012). "Ecological guild evolution and the discovery of the world's smallest vertebrate". PLoS ONE. 7 (1): e29797. doi:10.1371/journal.pone.0029797. PMC 3256195. PMID 22253785.