''Sundadanio margarition'' 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 ...

Sarawak Sarawak (; ) is a state of Malaysia. The largest among the 13 states, with an area almost equal to that of Peninsular Malaysia, Sarawak is located in northwest Borneo Island, and is bordered by the Malaysian state of Sabah to the northeast, ...

, Malaysian

Borneo Borneo (; id, Kalimantan) is the List of islands by area, third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java Isl ...

, and known from the Rajang and

Sarawak River The Sarawak River ( ms, Sungai Sarawak) is a river in Sarawak, Malaysia. It is an important source of water and transportation for the inhabitants in southwestern Sarawak. The river is also used for water-related sport activities such as the annu ...

drainages. It lives in coastal peat swamp forests. ''Sundadanio margarition'' 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=Q5601246 Sundadanio Endemic fauna of Borneo Freshwater fish of East Malaysia Taxa named by Kevin W. Conway Taxa named by Maurice Kottelat Taxa named by Heok Hui Tan Fish described in 2011