The whitespot or blue panchax, Aplocheilus panchax, is a common freshwater fish found in a large variety of habitats due to its high adaptability. A native fish of Southeast Asia

Southeast Asia

Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...

, it has even been discovered in two hot springs in Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

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Identified by a white-coloured spot on its head which gave it its name, the 8 cm long species tends to keep to the surface of the water, and is useful in controlling the mosquito population by feeding on its larvae.