''Chitala lopis'', also known as the belida or giant featherback, is a species of freshwater fish,

endemic Endemism is the state of a species being found only 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 foun ...

to the islands of

Java Java is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea (a part of Pacific Ocean) to the north. With a population of 156.9 million people (including Madura) in mid 2024, proje ...

and

Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

. It inhabits lowland river mainstreams and tributaries with rocky and sunken wood bottoms, as well as forest-covered streams. It feeds on smaller fishes, insects and vertebrates, mostly at night. The species was declared to be extinct on 2020, but rediscovered at the type locality in 2023.

References

Notopteridae Freshwater fish of Java Endemic fauna of Java Fish described in 1851 {{Osteoglossiformes-stub