What is a simple strategy for identifying fish in the ocean?

Focusing on common characteristics of fish is an effective strategy for identifying them in the ocean because it allows divers to use a combination of traits to make accurate identifications. These characteristics can include physical features such as body shape, fin structure, and patterns on the skin or scales, as well as behavioral traits like swimming styles and feeding habits. By understanding and recognizing these common traits across various species, divers can more easily differentiate between similar-looking fish, especially in diverse marine environments where numerous species may coexist.

Relying solely on the size of the fish or color can be misleading, as many species can exhibit significant variation in these attributes, depending on age, gender, or environmental factors. Observing the way fish swim offers useful clues but might not be sufficient on its own for complete identification, especially in cases where swimming patterns overlap between species.