
Dwarf snakehead is a term coined by
aquarists to describe a group of
''Channa'' snakehead fishes growing to about maximum. They are found in freshwater habitats (often streams) in South and Southeast Asia, and southern China.
[Endruweit, M. (2017). Description of a new dwarf snakehead (Perciformes: Channidae) from western Yunnan. Vertebrate Zoology 67(2): 173-178.]
The following snakeheads belong to this group:
[Lalramliana, J. D. M. Knight, D. V. Lalhlimpuia and M. Singh (2018). Integrative taxonomy reveals a new species of snakehead fish, Channa stiktos (Teleostei: Channidae), from Mizoram, North Eastern India. Vertebrate Zoology 68 (2): 165-175.]
*'' Channa andrao''
*'' Channa aurantipectoralis''
*'' Channa baramensis''
*'' Channa bipuli''
*'' Channa bleheri''
*'' Channa brunnea''
*'' Channa burmanica''
*'' Channa coccinea'' = Channa sp. Ignis
*'' Channa gachua''
*'' Channa harcourtbutleri''
*'' Channa kelaartii''
*'' Channa limbata''
*'' Channa lipor''
*'' Channa melanostigma''
*'' Channa orientalis''
*'' Channa ornatipinnis''
*'' Channa panaw''
*'' Channa pardalis''
*'' Channa pulchra''
*'' Channa pyrophthalmus'' = Channa sp. fire and ice.
*'' Channa quinquefasciata''
*'' Channa rara''
*'' Channa royi''
*'' Channa rubora'' = Channa sp. Burmese red rim rainbow or Channa sp. redfin.
*'' Channa shingon''
*'' Channa stewartii''
*'' Channa stiktos''
Some of these are borderline dwarf snakeheads, slightly surpassing in maximum length (e.g., ''C. pulchra'' has been called a dwarf snakehead, but may reach ). In contrast, the smallest dwarf snakehead species are less than .
Several of these only recently received their scientific name, but were already known among aquarists before. Examples of this are ''C. andrao'' (described 2013, previously known as ''C.'' sp. "Lal Cheng" or "blue bleheri"), ''C. pardalis'' (described 2016, previously known as ''C.'' sp. "Meghalaya leopard"), ''C. quinquefasciata'' (described 2018, previously known as ''C.'' sp. "five stripe"), ''C. torsaensis'' (described 2018, previously known as ''C.'' sp. "cobalt blue"), and ''C. brunnea'' (described 2019, previously known as ''C.'' sp. "chocolate bleheri"). A few dwarf snakeheads that are known from the aquarium trade remain undescribed, including:
*''Channa'' sp. ''Laos fireback''.
*''Channa'' sp. ''mulberry'' or ''Channa'' sp. ''morus''.
Besides their commonality of being of small size, dwarf snakeheads generally are paternal mouthbrooders (confirmed in some species, suspected in others). An exception is the free-spawning ''C. bleheri'' where the eggs float to the surface and the parents take care of them (no mouthbrooding).[SeriouslyFish]
Channa bleheri
Retrieved 12 February 2019.
Although several dwarf snakeheads are very close relatives, overall the group is not monophyletic
In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria:
# the grouping contains its own most recent co ...
. For example, the dwarfs ''C. burmanica'' and ''C. stewartii'' are phylogenetically
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical data ...
much closer to the large '' C. barca'' (up to ) than they are to the dwarfs ''C. ornatipinnis'', ''C. pulchra'' and ''C. stiktos''.[Conte-Grand, C., Britz, R., Dahanukar, N., Raghavan, R., Pethi-yagoda, R., Tan, H.H., Hadiaty, R.K., Yaakob, N.S. & Rüber, L. (2017). Barcoding snakeheads (Teleostei, Channidae) re-visited: Discovering greater species diversity and resolving perpetuated taxonomic confusions. PLoS ONE, 12 (9): e0184017.]
References
{{Reflist
External links
Comprehensive information on snakeheads at snakeheads.org
Channidae
Fish common names