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The archerfish (also known as spinner fish or archer fish) or Toxotidae are a monotypic family (although some include a second genus) of perciform tropical fish known for their unique predation technique of "shooting down" land-based insects and other small prey with jets of water spit from their specialized mouths.
An arch extending from the top of the centrum is called a neural arch, while the haemal arch or chevron is found underneath the centrum in the caudal vertebrae of fish. The centrum of a fish is usually concave at each end (amphicoelous), which limits the motion of the fish.
When part of the hyoid arch, the names of the bones are altered by replacing "-branchial" with "-hyal", thus "ceratobranchial" becomes "ceratohyal". [5] The Basihyals and Basibranchials lie at the midline of the lower edge of the throat. Almost all modern chondrichthyans have a single midline basihyal, as do many teleosts, lungfish, and ...
The gill arches of bony fish typically have no septum, so that the gills alone project from the arch, supported by individual gill rays. Some species retain gill rakers . Though all but the most primitive bony fish lack a spiracle, the pseudobranch associated with it often remains, being located at the base of the operculum.
Archosargus probatocephalus, the sheepshead, sheepshead seabream or convict fish, is a species of marine ray-finned fish belonging to the family Sparidae, the seabreams and porgies.
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Fish systematics is the formal description and organisation of fish taxa into systems. It is complex and still evolving. Controversies over "arcane, but important, details of classification are still quietly raging".
The 47-year-old Fisch left Arizona to take the Washington job on Sunday, just two days after Kalen DeBoer left the Huskies to replace Nick Saban at Alabama.