''Macropodus hongkongensis'' is a species of

paradise fish The paradise fish, paradise-fish, paradisefish, or paradise gourami (''Macropodus opercularis'') is a species of gourami found in most types of fresh water in East Asia, ranging from the Korean Peninsula to northern Vietnam. This species can ...

('' Macropodus'')

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 elsew ...

southern China South China () is a geographical and cultural region that covers the southernmost part of China. Its precise meaning varies with context. A notable feature of South China in comparison to the rest of China is that most of its citizens are not n ...

. This species was first discovered in Hong Kong, but later was found in other areas of southern China. It is found in mountainous regions as well as lowland habitats. This species grows to a length of more than 10 cm. Like other ''Macropodus'', ''M. hongkongensis'' is popular among Chinese fish keepers and is called "Hong Kong black paradise fish (Traditional Chinese:香港黑叉尾鬥魚 or HK黑). This fish is easy to keep and breed in aquariums but has a reputation for being unusually aggressive.

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* hongkongensis South China Freshwater fish of China Endemic fauna of China Fish described in 2002 Taxa named by Jörg Freyhof Taxa named by Fabian Herder {{Anabantiformes-stub