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Stomiidae
Stomiidae is a family of deep-sea ray-finned fish, including the barbeled dragonfishes, that live in all oceans in a wide range of depths. They are quite small, usually around 15 cm, up to 26 cm, and they exhibit a strong sexual dimorphism. These fish are apex predators and have enormous jaws filled with fang-like teeth. They are also able to hinge the neurocranium and upper-jaw system, which leads to the opening of the jaw to more than 100 degrees. This ability allows them to consume extremely large prey, often 50% greater than their standard length. Evolution Due to their extreme habitats, stomiids are very rare in the fossil record. The oldest known genus is '' Azemiolestes'' Prokofiev, 2001 from the Middle Eocene (Lutetian) of Georgia. Other fossil genera include '' Abruzzoichthys'' Carnevale, 2002 from the Middle Miocene of Italy and '' Mrazecia'' Pauca, 1929 from the Early Oligocene of Romania. Genera File:Astronesthes niger.PNG, '' Astronesthes niger'' File: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Idiacanthus
''Idiacanthus'' is a genus of barbeled dragonfishes, the larvae of which are noted for exhibiting the Stylophthalmine trait. Species There are currently three recognized species in this genus: * ''Idiacanthus antrostomus'' Charles Henry Gilbert, C. H. Gilbert, 1890 (Pacific blackdragon) * ''Idiacanthus atlanticus'' August Bernhard Brauer, A. B. Brauer, 1906 (Black dragonfish) * ''Idiacanthus fasciola'' Wilhelm Peters, W. K. H. Peters, 1877 (Ribbon sawtail fish) Ecology Distribution and habitat Members of this genus have been found from the mesopelagic zone to the bathypelagic zone. ''Idiacanthus atlanticus'' is found in subtropical to temperate habitats, mainly in the southern hemisphere. ''Idiacanthus fasciola'' is more widely distributed, found in both North and South Atlantic as well as the Indo-Pacific and other areas. ''Idiacanthus antrostomus'' is mainly found in the Eastern Pacific. Reproduction The average fertile ''Idiacanthus fasciola'' female is known to hold a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
