Kneriidae
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The Kneriidae are a small family of freshwater gonorhynchiform fishes native to sub-Saharan Africa.
The species in this family typically live in fast-flowing streams, often in highlands, and are small fish, no more than Template:Cvt in length. The second subfamily Phractolaeminae contains only a single species, which typically inhabits stagnant or slow-moving waters and reaches up to Template:Cvt in length. All Kneriidae have an elongated body shape. Some species are sexually dimorphic, with the male possessing a rosette on the gill covers that is absent in the females. Other species are neotenic, retaining larval features into adulthood.[1]
Classification
There are about 31 extant (living) species in four genera.[2] Phractolaemidae is now regarded as a full family.[3][4]
Genera
- Cromeria Boulenger, 1901
- Grasseichthys Géry, 1964
- Kneria Steindachner, 1866
- Parakneria Poll, 1965
In addition, the family includes the genus Mahengichthys Davis, Arratia & Kaiser, 2013, which only is known from Eocene fossil remains and is closer to Kneriinae than Phractolaemidae.[4][5]
References
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