Fish farming.

What are the characteristics of fish

Fish possess several key characteristics that distinguish them from other animals:

Gills for Respiration: Fish typically breathe through gills, which allow them to extract oxygen from water.
Aquatic Habitat: Fish live in water, whether it be freshwater, saltwater, or brackish environments.
Scales and Skin: Most fish have scales that cover their skin, providing protection and aiding in locomotion.
Fins for Movement: Fish use fins to navigate through water, including dorsal, pectoral, pelvic, anal, and caudal (tail) fins.
Cold-Blooded (Ectothermic): Fish are ectothermic, meaning their body temperature is regulated by the surrounding water temperature.