Mirapinna esau
| Mirapinna esau | ||||||||||||
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Mirapinna esau |
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Mirapinna | ||||||||||||
| Bertelsen & Marshall, 1956 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Mirapinna esau | ||||||||||||
| Bertelsen & Marshall , 1956 |
Mirapinna esau ( Syn .: Procetichthys kreffti , Paxton, 1989) is a bony fish from the order of the mucous head-like (Beryciformes) that wasoriginally only known from a single caught specimen. The 5.5 centimeter long type specimen wascaughtnear the surface of the sea in the Atlantic north of the Azores . Mirapinna esau is a deep-sea fish that, as an adult fish,lives bathypelagically at depths of up to 2200 meters.
features
Mirapinna esau has an elongated, scaly body that is densely covered with short, hairy outgrowths. The function of the outgrowths is unknown. They are provided with gland cells and could serve to defend against enemies or perceive mechanical or chemical stimuli. The pelvic fins of Mirapinna esau are enlarged like wings, can flap from top to bottom and sit directly behind the head. The pectoral fins are small and stand high on the trunk, behind the pelvic fins. The caudal fin is divided into two parts, the upper and lower halves overlap in the middle. The fin rays of the pelvic fins and the caudal fin are extended far beyond the edge of the fin membrane. There is no swim bladder . The type specimen of Mirapinna esau was thought to be a young animal.
Only in 2008 did it emerge that the whale-headed marine fish Procetichthys kreffti, described in 1989, are the adult females of Mirapinna esau , or that Mirapinna esau is a post-larval juvenile stage of Procetichthys kreffti . Since Mirapinna esau is the oldest available name of the species, it is the valid name of the species according to the priority principle of the International Rules for Zoological Nomenclature .
Fins formula of the adult animals: dorsal 0/14, anal 0/13.
literature
- Joseph S. Nelson : Fishes of the World . John Wiley & Sons, 2006, ISBN 0-471-25031-7 .
- K. Deckert, Gisela Deckert , GE Freytag, G. Peters, G. Sterba: Urania animal kingdom, fish, amphibians, reptiles. Urania-Verlag, 1991, ISBN 3-332-00376-3 .
Individual evidence
- ↑ John R. Paxton & G. David Johnson: The cetomimoid conundrum resolved — Whalefishes (Cetomimidae), Tapetails (Mirapinnidae), and Bignose fishes (Megalomycteridae): Amazing larval transformations and striking sexual dimorphism. Contribution to the International Symposium on Systematics and Diversity of Fishes at the National Museum of Nature and Science in Tokyo , March 3-4, 2008
- ↑ G. David Johnson, John R. Paxton, Tracey T. Sutton, Takashi P. Satoh, Tetsuya Sado, Mutsumi Nishida & Masaki Miya: Deep-sea mystery solved: astonishing larval transformations and extreme sexual dimorphism unite three fish families. Biol. Lett. 23 April 2009 vol. 5 no. 2 235-239 doi: 10.1098 / rsbl.2008.0722
- ↑ Procetichthys kreffti on Fishbase.org (English)
Web links
- Mirapinna esau on Fishbase.org (English)