Phallostethidae
| Phallostethidae | |
|---|---|
 |
|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Atheriniformes |
| Family: |
Phallostethidae Regan, 1913 |
| Genera | |
Gulaphallus
Neostethus
Phallostethus
Phenacostethus
The priapum fishes are a family, Phallostethidae, of atheriniform fish native to freshwater and brackish habitats in southeast Asia.
They are small, no more than 3.5 cm (1.4 in) in length, with partially translucent bodies. They are found in fresh and brackish water from Thailand to the Philippines and Sulawesi. They are named for a muscular organ found under the chin of males. This organ, which may possess small testicles, is used together with the pelvic fins to grasp the female during mating. Unlike most other fish, priapum fishes exhibit internal fertilisation.
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