Pearl eyes

Pearl eyes
Scopelarchus guentheri
Systematics
Subclass : Real bony fish (Teleostei) Overcohort : Clupeocephala Cohort : Euteleosteomorpha Sub-cohort : Neoteleostei Order : Lizardfish (Aulopiformes) Family : Pearl eyes
Scientific name
Scopelarchidae
Regan , 1911

The pearl eyes (Scopelarchidae) are a family of deep-sea fishing from the order of Lizardfish relatives (Aulopiformes). The fish live in all oceans with the exception of the Mediterranean and the Arctic Ocean . Fully grown pearl eyes stay mainly at depths of 500 to 1000 meters, the larvae between 100 and 200 meters. They predatory feed on other meso- and bathypelagic fish, for example bristle- mouthed fish or lantern fish .

features

Pearl eyes are 3.6 to 23 centimeters long, depending on the species. They have large tube eyes that point directly upwards or laterally upwards. The tongue is strong and covered with teeth. Your whole body and the head region behind your eyes is covered in cycloid scales. There are 40 to 65 scales along the lateral line organ . They have 40 to 65 vertebrae . A swim bladder is missing.

Fin formula : dorsal 5–10, anal 17–39, pectoral 18–28

Genera and species

There are 18 species in five genera:

1 u. 2 - Benthalbella elongata
3 u. 4 - Benthalbella infans
5 u. 6 - Scopelarchus michaelsarsi

• Genus Benthalbella
  • Benthalbella dentata
  • Benthalbella elongata
  • Benthalbella infans
  • Benthalbella linguidens
• Genus Lagiacrusichthys
  • Lagiacrusichthys macropinna
• Genus Rosenblattichthys
  • Rosenblattichthys alatus
  • Rosenblattichthys hubbsi
  • Rosenblattichthys nemotoi
  • Rosenblattichthys volucris
• Genus Scopelarchoides
  • Scopelarchoides climax
  • Scopelarchoides danae
  • Scopelarchoides kreffti
  • Scopelarchoides nicholsi
  • Scopelarchoides signifer
• Genus Scopelarchus
  • Scopelarchus analis
  • Scopelarchus guentheri
  • Scopelarchus michaelsarsi
  • Scopelarchus stephensi

literature

• Joseph S. Nelson : Fishes of the World , John Wiley & Sons, 2006, ISBN 0-471-25031-7 .
• Kurt Fiedler: Textbook of Special Zoology, Volume II, Part 2: Fish . Gustav Fischer Verlag Jena, 1991, ISBN 3-334-00339-6 .

Web links

Commons : Scopelarchidae  - Collection of images, videos and audio files

• Pearl eyes on Fishbase.org (English)