The spotfin betta or Brunei beauty
(''Betta macrostoma'') is a species of
labyrinth fish 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 else ...
to the island of
Borneo
Borneo (; id, Kalimantan) is the 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, west of Sulawesi, and ea ...
. It generally inhabits pools of very slow-moving water along rivers and streams in very shallow waters of or less. This species grows to a length of in the wild, and is occasionally found in the
aquarium trade; in captivity this species regularly reaches 4 inches in length.
References
Fauna of Brunei
Betta
Taxa named by Charles Tate Regan
Fish described in 1910
Taxonomy articles created by Polbot
Freshwater fish of Borneo
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