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The milkfish (Chanos chanos) is a widespread species of ray-finned fish found throughout the Indo-Pacific. It is the sole living species in the family Chanidae , and the only living member of the genus Chanos .
The Gonorynchiformes / ɡ ɒ n ə ˈ r ɪ ŋ k ɪ f ɔːr m iː z / are an order of ray-finned fish that includes the important food source, the milkfish (Chanos chanos, family Chanidae), and a number of lesser-known types, both marine and freshwater. The alternate spelling "Gonorhynchiformes", with an "h", is frequently seen but not official.
The family Chanidae is subdivided into two subfamilies, Rubiesichthyinae and Chaninae. [4] [page needed]†Cabindachanos Taverne et al. 2019 - Paleocene [5] Coelogaster Eastman, 1905 [Coelogaster Agassiz 1835 nomen nudum ; Coelogaster Eastman 1905 non Schrank 1780 non Schoenherr 1837 non Schultze 1896 ; Ptericephalina Lioy 1866; †Eucoelogaster White & Moy-Thomas 1940] - Early Eocene [6]
For a fuller treatment of this taxonomy, see the vertebrate article. The position of hagfish in the phylum Chordata is not settled. Phylogenetic research in 1998 and 1999 supported the idea that the hagfish and the lampreys form a natural group, the Cyclostomata, that is a sister group of the Gnathostomata. [3] [4]
Ostariophysi is the second-largest superorder of fish.Members of this superorder are called ostariophysians.This diverse group contains 10,758 species, about 28% of known fish species in the world and 68% of freshwater species, and are present on all continents except Antarctica.
Taxonomy [ edit ] Leiognathidae is classified within the suborder Percoidei by the 5th edition of Fishes of the World , but they are placed in an unnamed clade which sits outside the superfamily Percoidea .
Dastilbe could reach a length of 25–60 millimetres (0.98–2.36 in), with a maximum length of about 150 millimetres (5.9 in). It was probably an anadromous fish, tolerant of hypersalinity and subjected to frequent mass mortality.
The spotted trunkfish is a member of the genus Lactophrys, a name which is a compound of lactaria, meaning a "milkcow", and ophrys, meaning "eyebrow", a reference to the spines above the eyes resembling the horns of a cow.