Rhamphocottidae

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Rhamphocottidae
Grunts (Rhamphocottus richardsonii)

Grunts ( Rhamphocottus richardsonii )

Systematics
Spinefish (Acanthopterygii)
Perch relatives (Percomorphaceae)
Order : Perch-like (Perciformes)
Subordination : Cottoidei
Partial order : Bull relatives (Cottales)
Family : Rhamphocottidae
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

Ereunias grallator

There are three genera with four types:

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