''Hemirhamphodon'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
viviparous halfbeak
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 ...
fish. Most recognized species are
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 ...
to lowland forest streams, rivers and swamps in
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 eas ...
(often in areas with
peat
Peat (), also known as turf (), is an accumulation of partially decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, moors, or muskegs. The peatland ecosystem covers and is the most efficien ...
), but ''H. phaiosoma'' and ''H. pogonognathus'' are also found elsewhere in
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
. The largest species reaches about in length. These fish are
viviparous
Among animals, viviparity is development of the embryo inside the body of the parent. This is opposed to oviparity which is a reproductive mode in which females lay developing eggs that complete their development and hatch externally from the ...
(with the exception of
oviparious
Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and ...
''H. tengah'')
[ and are sometimes kept as ]aquarium
An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...
fish, but otherwise have no commercial value.
Species
There are currently nine recognized species in this genus:[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.''
* '' Hemirhamphodon chrysopunctatus'' Brembach, 1978
* '' Hemirhamphodon kapuasensis'' Collette, 1991
* '' Hemirhamphodon kecil'' H. H. Tan & K. K. P. Lim, 2013[
* '' Hemirhamphodon kuekenthali'' Steindachner, 1901
* '' Hemirhamphodon phaiosoma'' (]