noun🔗ShareテトラAny of numerous species of small South American freshwater fish of the family Characidae, popular in home aquariums."The aquarium in the doctor's waiting room was filled with brightly colored tetra and lush green plants. "医者の待合室の水槽には、鮮やかな色のテトラと緑豊かな植物がいっぱいだった。fishanimalChat with AIVocabulary GamePractice Reading