Thermichthys hollisi
| Thermichthys hollisi | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Thermichthys | ||||||||||||
| Nielsen & Cohen , 2005 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Thermichthys hollisi | ||||||||||||
| (Cohen, Rosenblatt & Moser, 1990) |
Thermichthys hollisi ( Syn .: Bythites hollisi , Gerhardia hollisi ) is a marine fish up to 30 cm long, which was first caught in 1988 by the deep-sea submarine Alvin at a spreading zone near the Galápagos Islands at a depth of about 2500 meters and in 1990 scientifically has been described . The fish live there in the vicinity of hydrothermal springs . They are the only endemic vertebrates in this habitat. Thermichthys hollisi is probably adapted to higher temperatures than those normally found in the deep sea (2 to 4 ° C).
food
The basis of the food chain in this biotope is formed by chemosynthetically active bacteria and archaea , which in the hot, lightless environment use hydrogen sulfide as an energy source to convert carbon dioxide into organic compounds . Individuals of Thermichthys hollisi have been seen floating over the hot springs and occasionally sticking their heads in the stream of warm water. It is not known whether the fish eat bacteria directly or other animals that feed on the bacteria.
Appearance
Thermichthys hollisi has a short, sturdy body, a large mouth and small, poorly developed eyes. The caudal fin has grown together with the dorsal and anal fin to form a continuous fin edge.
literature
- Daniel Cohen, Richard H. Rosenblatt & Geoffrey Mose: Biology and description of a bythitid fish from deep-sea thermal vents in the tropical eastern Pacific . Deep Sea Research. Vol. 37, No. 2, pp. 267-283, 1990.
Individual evidence
- ↑ a b Dahlhoff, Schneidemann, Somero: Pressure-Temperature Interactions on M4-Lactate Dehydrogenases From Hydrothermal Vent Fishes: Evidence for Adaptation to Elevated Temperatures by the Zoarcid Thermarces andersoni, but not by the Bythitid, Bythites hollisi . Biol. Bull. 179: 134-139. (Aug, 1990). PDF full text
Web links
- Thermichthys hollisi on Fishbase.org (English)