Tarpon-like
| Tarpon-like | ||||||||||||
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Indo-Pacific tarpon ( Megalops cyprinoides ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Elopiformes | ||||||||||||
| Gosline , 1960 |
The Tarpunartigen (Elopiformes) are nine kinds comprehensive order of bony fishes . They are related to the eel-like species and have the same larval form with them, the leptocephalus larva , which is only small in the tarpon-like species and is a maximum of five centimeters long.
features
Their body is slender, spindle-shaped, oval in cross section or laterally flattened. The scales are cycloid . The eyes are large and protected by fat eyelids . The mouth is large and terminal or above, the gill openings wide. The maxillary margin is formed by the premaxillary and the dentate maxillary . The lower jaw extends behind the eye. The sideline does not extend to the small gill cover . The pelvic fins are ventral. The caudal fin is deeply forked. She has seven hypuralia . Postcleithra and mesocoracoid (bones in the shoulder girdle) are present. The gulare, a bony throat plate, is well developed. The number of branchiostegal rays is 23 to 35. The leptocephali of the tarpon-like are small, reach a maximum length of 5 cm, and have a well-developed, forked caudal fin and a rear dorsal fin. The number of their muscle sections (segments) in the trunk muscles is 53 to 86.
Familys
- † Anaethalionidae
- Female fish (Elopidae), 7 species
- Tarpon (Megalopidae), 2 types
Tribal history
Tarpon-like fish are an old group of fish and have been known from Europe, Asia and Africa since the Upper Jurassic .
literature
- Joseph S. Nelson : Fishes of the World . John Wiley & Sons, 2006, ISBN 0-471-25031-7 .
- Karl Albert Frickhinger: Fossils Atlas Fish , Mergus-Verlag, Melle, 1999, ISBN 3-88244-018-X .
Web links
- Tarpon species on Fishbase.org (English)