Nyctibatrachus minimus
family: Nyctibatrachidae
Species Description: Biju, S.D., Van Bocxlaer, I., Giri, V.B., Roelants, K., Nagaraju, J. and Bossuyt, F. 2007. A new nightfrog, Nyctibatrachus minimus sp. nov. (Anura: Nyctibatrachidae): the smallest frog from India. Current Science 93: 854-858.
Conservation Status (definitions)
IUCN (Red List) Status Data Deficient (DD)
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: India



View distribution map using BerkeleyMapper.

From the IUCN Red List Species Account:


Range Description

This species has so far been recorded only from the general vicinity of Kurichiyarmala, in Wayanad District, Kerala, India, at 1,200m asl (Biju et al., 2007). It is currently known from seven sub-populations on the Wayanad Plateau (S.D. Biju, pers. comm.). It might be found to occur a little more widely, but it is probably endemic to Wayanad Plateau (S.D. Biju, pers. comm.).

Habitat and Ecology

This species has been recorded from Shola forests (patches of high-altitude forest separated from one another by undulating grassland) (Biju et al., 2007). Of the seven currently known populations, five are in degraded forests in and around small-scale cultivation and plantations of cardamom and coffee, and two are in undisturbed, wet evergreen forest (S.D. Biju, pers. comm.). There is no clear difference in abundance in these two habitat types (S.D. Biju, pers. comm.). It is not known whether or not it can adapt to seriously degraded, open habitats (S.D. Biju, pers. comm.). The males start calling from marshes inside the forest during or immediately after sunset (Biju et al., 2007) in the monsoon period (S.D. Biju, pers. comm.). While most species of Nyctibatrachus are aquatic, the miniature species mainly inhabit the forest floor, where they are mostly found in leaf litter or under rocks (Biju et al., 2007), and on the banks of streams (though not in the flowing water (S.D. Biju, pers. comm.)). It breeds by larval development in shallow water (S.D. Biju, pers. comm.).


It is a locally common species, but it is restricted to a small area within its range (S.D. Biju, pers. comm.).

Population Trend


Major Threats

It can adapt to somewhat degrated forest. However, it is possible that serious opening up of the habitat for agriculture is detrimental to the species.

Conservation Actions

It has not been recorded from the Wayanad Wildlife Sanctuary (S.D. Biju, pers. comm.). Surveys are needed to determine the distribution, abundance, ecological requirements, threats and conservation needs of this species.

Red List Status

Data Deficient (DD)


Listed as Data Deficient since it has only recently been described, and there is still very little known about its extent of occurrence, area of occupancy, status and ecological requirements.


S.D. Biju 2008. Nyctibatrachus minimus. The IUCN Red List of Threatened Species 2008: e.T136045A4240792. .Downloaded on 23 February 2019


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