Rhamphichthyidae
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Gymnoramphichthys |
Sand knifefishes are freshwater fishes of the Rhamphichthyidae family, from South America. There are only 3 genera and around 15 species in this group.[1]
Just like most part of the members of the Gymnotiformes group, they also have elongated and compressed bodies and electric organs. The long anal fin actuall extends from before the pectoral fins to the tip of the tail. There is no dorsal fin.[2] Teeth are absent in the oral jaws and the snout is very long and tubular. The nostrils are very close together. This group is sometimes known as the tubesnout knifefishes for this reason.[1]
They are nocturnal and burrow in the sand during the day.[2]
[edit] Species
Species list below is according to ITIS.[3]
- Gymnorhamphichthys Ellis in Eigenmann, 1912
- Gymnorhamphichthys hypostomus Ellis in Eigenmann, 1912
- Gymnorhamphichthys petiti Géry and Vu-Tân-Tuê, 1964
- Gymnorhamphichthys rondoni (Miranda Ribeiro, 1920)
- Gymnorhamphichthys rosamariae Schwassmann, 1989
- Iracema Triques, 1996
- Iracema caiana Triques, 1996
- 'Rhamphichthys Müller and Troschel, 1849
- Rhamphichthys apurensis (Fernández-Yépez, 1968)
- Rhamphichthys atlanticus Triques, 1999
- Rhamphichthys drepanium Triques, 1999
- Rhamphichthys hahni (Meinken, 1937)
- Rhamphichthys lineatus Castelnau, 1855
- Rhamphichthys longior Triques, 1999
- Rhamphichthys marmoratus Castelnau, 1855
- Rhamphichthys rostratus (Linnaeus, 1766)
- Rhamphichthys schomburgki Kaup, 1856
[edit] See also
[edit] References
- ^ a b Nelson, Joseph, S. (2006). Fishes of the World. John Wiley & Sons, Inc.. ISBN 0471250317.
- ^ a b "Rhamphichthyidae". FishBase. Ed. Ranier Froese and Daniel Pauly. Apr 2007 version. N.p.: FishBase, 2007.
- ^ Rhamphichthyidae (TSN 163331). Integrated Taxonomic Information System. Accessed on 02 Apr 2007.
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