tel·e·ost 
(tĕlē-ŏst′, tēlē-)
(tĕlē-ŏst′, tēlē-)n.
Any of various fishes of the group Teleostei, having a protrusible upper jaw and including most of the ray-finned fishes.
[From New Latin Teleosteī, group name (Greek teleos, complete; see TELEOLOGY + osteon, bone; see ost- in the Appendix of Indo-European roots) and from New Latin Teleostomī, group name (Greek teleos, complete + Greek stoma, mouth).]