Etmopterus dianthus
| Etmopterus dianthus | ||||||||||||
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| Scientific name | ||||||||||||
| Etmopterus dianthus | ||||||||||||
| Last , Burgess & Séret , 2002 |
Etmopterus dianthus is a species of the genus Etmopterus within the lantern sharks ( Etmopterinae ; also classified as the Etmopteridae family). It reaches a body length of about 35 centimeters with a maximum length of at least 41 centimeters. The distribution area of this species includes parts of the Southwest Pacific off the coast of Australia and New Caledonia (isolated evidence).
Appearance and characteristics
Etmopterus dianthus is a small shark with a known body length of about 35 centimeters with a maximum length of at least 41 centimeters. It has an elongated body typical of the lantern sharks with a long and at the same time wide and flattened head. The body color of freshly caught specimens is pink and turns brown-gray when preserved. The underside is black, also has black markings behind the anal fins and on the caudal peduncle and on the upper part of the caudal fin. It also has the light organs typical of the lantern sharks on the belly side.
It has no anal fin and two dorsal fins with the order-typical spines in front of the dorsal fins. The first dorsal fin begins far behind the pectoral fins and is smaller and flatter than the second and has a small spine, while the spine of the second dorsal fin is strong and as high as the fin. Like all species in the family, the animals have five gill slits and an injection hole behind the eye.
distribution
The distribution area of this species includes parts of the southwest Pacific off the coast of Australia and New Caledonia (isolated evidence). Here he is known from depths of 700 to 880 meters.
Way of life
Etmopterus dianthus lives in the area of the continental shelf and on island bases . Like other sharks, it feeds in a predatory manner, likely on smaller fish and invertebrates. Little data is available about his way of life.
Like other species of order, it is viviparous ( ovoviviparous ).
Danger
Etmopterus dianthus is listed in the IUCN Red List as not endangered (“least concern”). The shark is currently only known from a limited marine area, but future explorations may identify additional occurrences. There is currently no major fishing activity in the known area and if caught it is likely to be discarded due to its small size and lack of commercial value, and survival rates after discard are unknown. An expansion of deep-sea fishing is currently unlikely, at least in the Australian range of this species, and there is currently no reason to suspect a decrease in range, habitat quality or the number of sexually mature individuals.
supporting documents
- ↑ a b Etmopteridae .: Lantern sharks. In: Compagno et al. 2004.
- ^ Leonard Compagno , Marc Dando, Sarah Fowler: Sharks of the World. Princeton Field Guides, Princeton University Press , Princeton / Oxford 2005, ISBN 978-0-691-12072-0 , p. 98.
- ↑ a b Etmopterus dianthus in the endangered Red List species the IUCN 2020 Posted by: PM Kyne, RD Cavanagh (SSG Australia & Oceania Regional Workshop, March 2003), 2015. Accessed June 9 2020th
literature
- Leonard Compagno , Marc Dando, Sarah Fowler: Sharks of the World. Princeton Field Guides, Princeton University Press , Princeton / Oxford 2005, ISBN 978-0-691-12072-0 , p. 98.
Web links
- Etmopterus dianthus on Fishbase.org (English)