''Sundadanio atomus'' is a

danionin The danionins are a group of small, minnow-type fish belonging to the family Cyprinidae. Members of this group are mostly in the genera ''Danio'', '' Devario'', and ''Rasbora''. They are primarily native to the fresh waters of South and Southeast ...

in the family

Cyprinidae Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest v ...

. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

Singkep Singkep is an island in the Lingga Archipelago in Indonesia. Its area is . It is separated from the east coast of Sumatra by the Berhala Strait. It is surrounded by islands Posik to the west, I. Serak to the SW, I. Lalang to the South, and I. S ...

, off Sumatra (

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

). It lives in peat swamp forests. ''Sundadanio atomus'' reaches a maximum size of

standard length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish ...

References

{{Taxonbar, from=Q14420253 Sundadanio Freshwater fish of Sumatra Endemic fauna of Sumatra Taxa named by Kevin W. Conway Taxa named by Maurice Kottelat Taxa named by Heok Hui Tan Fish described in 2011