Also known as Betta, Crowntail, Halfmoon, Siamese Fightingfish.
Found in standing water over canals, floodplains, rice paddies and rivers.
They feed on insect larvae, mosquito larvae and zooplankton.
Length - 6.5cm
Depth - ?
Asia - Mekong basin.
Males will fight each other if put together, hence the name.
Popular in the aquarium trade. These fish can vary greatly in colour. Ref: https://www.fishbase.de/summary/4768