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Zenarchopteridae
Zenarchopteridae, the viviparous halfbeaks, is a family in the order Beloniformes. The Zenarchopteridae exhibit strong sexual dimorphism, practicing internal fertilisation, and in some cases ovoviviparous or viviparous (the family also includes oviparous species).〔Berra, T.M. (2001). ''Freshwater Fish Distribution.'' p. 320. ISBN 978-0-12-093156-9〕〔Tan, H.H. & Lim, K.K.P. (2013). ''(Three new species of freshwater halfbeaks (Teleostei: Zenarchopteridae: ''Hemirhamphodon'') from Borneo. )'' The Raffles Bulletin of Zoology 61(2): 735–747.〕 The members in the family are mainly found in fresh and brackish water of tropical Asia and New Guinea, but the genus ''Zenarchopterus'' also includes marine species from the Indo-Pacific. Several, such as the wrestling halfbeak, have become commonly traded aquarium fish.
==Behaviour==
Viviparous halfbeaks vary in social behavior from open water schooling fish similar to the marine halfbeaks (family Hemiramphidae), as with species of ''Zenarchopterus'',〔 through to much more aggressive and combative fishes, as is best known from the "wrestling" halfbeaks of genus ''Dermogenys''.〔 These non-schoolers prefer to lurk among aquatic plants such as reeds, dead trees, and artificial structures of various types; from where they wait for small prey animals to drift by or alight on the surface, before darting from their hiding place to hunt.〔 Notably, they feed extensively on female mosquitoes that are laying their eggs in the water, making them much better at mosquito control that species like guppies and mosquitofish that only take mosquito larvae.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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