1. Plural of bonytongue; a group of freshwater fish (family Osteoglossidae) characterized by a bony tongue and large scales, native to tropical regions of South America, Africa, and Asia.
Usage: ichthyology; often used in aquarium hobby

Examples

• Bonytongues are popular in the aquarium trade due to their striking appearance.
• The arowana is one of the most prized bonytongues among collectors.
• Bonytongues use their bony tongue to manipulate food in their mouths.
• Many species of bonytongues are endangered in their native habitats.
• Aquarists often keep bonytongues in large tanks because they grow quite large.