Rhamphocottidae
Rhamphocottidae | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Grunts ( Rhamphocottus richardsonii ) |
||||||||||||
Systematics | ||||||||||||
|
||||||||||||
Scientific name | ||||||||||||
Rhamphocottidae | ||||||||||||
Gill , 1888 |
The Rhamphocottidae (Synonym: Ereuniidae) are a family of four species of marine fish that occurs in the northern Pacific from Japan , across Alaska in the north and the Hawaii-Emperor chain in the south to southern California.
features
The Rhamphocottidae are group-like fish with two clearly separated dorsal fins and large pectoral fins. They become 8 to 30 centimeters long. Diagnostic features of the family are the existing first pharyngobranchial (bones of the branchial arch skeleton) and the pectoral fins, in which, as in the gurnards (Triglidae), several lower fin rays are not connected by a fin membrane and are freely movable. The hypuralia and parahypuralia (bones of the caudal fin skeleton) are fused into a single, complex bone.
Genera and species
There are three genera with four types:
- Genus Ereunias Jordan & Snyder, 1901
- Ereunias grallator Jordan & Snyder, 1901
- Genus Marukawichthys Sakamoto, 1931
- Marukawichthy's ambulator Sakamoto, 1931
- Marukawichthys pacificus Yabe, 1983
- Genus Rhamphocottus Günther, 1874 - type genus .
- Grunts ( Rhamphocottus richardsonii Günther, 1874 )
Systematics
The family Rhamphocottidae was introduced in 1888 by the American ichthyologist Theodore Nicholas Gill for the grunt group ( Rhamphocottus richardsonii ) and remained monotypical for over 120 years . In 2014, the Ereuniidae family ( Jordan & Snyder , 1901 ) was synonymous with the Rhamphocottidae family based on morphological and genetic studies.
literature
- Joseph S. Nelson , Terry C. Grande, Mark VH Wilson: Fishes of the World. Wiley, Hoboken, New Jersey, 2016, ISBN 978-1118342336 .
- W. Leo Smith, Morgan S. Busby: Phylogeny and Taxonomy of Sculpins, Sandfishes, and Snailfishes (Perciformes: Cottoidei) with Comments on the Phylogenetic Significance of their Early-Life-History Specializations. Molecular Phylogenetics and Evolution, July 8, 2014, doi: 10.1016 / j.ympev.2014.06.028