When referring to the aquatic creatures that we keep in tanks, the term "aquarium fishes" is commonly used. However, there are several synonyms for this term that can be used to describe these captivating creatures. "Tank fish" is one such synonym that describes fishes kept in an enclosed environment such as a tank or aquarium. "Pet fish" is another commonly used phrase, as these fishes are often treated as pets by their owners, enjoying regular feeding, cleaning, and care. Other synonyms for aquarium fishes include "ornamental fish," "aquatic pets," and "tank dwellers." No matter what term is used, there is no denying the beauty and charm of these underwater creatures.