Definition of Osteichthyes in English:


plural noun

  • A class of fishes that includes those with a bony skeleton.

    Compare with Chondrichthyes
    • ‘The division Teleostei within the Osteichthyes (bony fish) is made up of 38 orders.’
    • ‘Gill rakers are found in both chondrichthyans and in Osteichthyes, as well as acanthodians.’
    • ‘The other two large groups are the class of Crustacea (Shrimp, Lobster, Crab) and Osteichthyes (bony fish).’
    • ‘Our analyses also give a strong support for the separation of Chondrichthyes (cartilaginous fishes) before the divergence of Osteichthyes (bony fishes) from the other gnathostomes.’
    • ‘Jawed vertebrates are divided again into two groups, the cartilaginous Chondrichthyes (represented by sharks, rays, and chimeras) and the bony Osteichthyes.’


Modern Latin (plural), from Greek osteon ‘bone’ + ikhthus ‘fish’.