6-415: Gonorynchus is a genus of long thin gonorynchiform ray-finned fish , commonly called beaked salmon or beaked sandfish . They live on sandy bottoms near shorelines of the temperate & subtropical Southern Hemisphere and East Asia . There are five known extant species which are placed in this genus . All have a distinctive angular snout (hence the name) that the fish use to dig themselves into
12-453: A primitive Weberian apparatus formed by the first three vertebrae and one or more cephalic ribs within the head. This apparatus is believed to be a hearing organ, and is found in a more advanced and complex form in the related cypriniform fish, such as carp . Also like the cypriniforms, the gonorynchiforms produce a substance from their skin when injured that dissolves into the water and acts an alarm signal to other fish. Although many of
18-703: Is Gonorynchus gonorynchus , found in scattered locations worldwide. It can reach up to 60 cm (24 in) in length. It is a nocturnal fish, feeding on invertebrates at night and burrowing into sand or mud during the day. Beaked salmon are fished commercially in some areas. The flesh of Gonorynchus greyi , found around Australia and New Zealand , is reported to be "firm and of good flavour". Source: Gonorynchiform Chanidae (milkfish) Gonorynchidae (beaked salmons) Kneriidae (shellears) Phractolaemidae (hingemouths) 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
24-460: The families are rather small, there are several fossil genera. This listing of the groups of Gonorynchiformes includes fossil fish with a short description. They are listed in approximate order of how primitive their characteristics are. Gonorynchus Chanos Phractolaemus Kneria Parakneria Cromeria Grasseichthys The 5th edition of Fishes of the World classifies
30-414: 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. Gonorynchiformes have small mouths and no teeth. They are the sole group in the clade Anotophysi, a subgroup of the superorder Ostariophysi . They are characterized by
36-542: The sand. A swim bladder is absent. They are the last surviving members of the ancient family Gonorynchidae , which was much more diverse in the past. Unlike other gonorynchids, there have been no known fossil remains of Gonorynchus identified, although they are assumed to have diverged from their closest relative (the extinct Notogoneus ) during the Albian stage of the Early Cretaceous . The most widespread species
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