The nature of fish behaviors is closely related to their habitat and form of predation. For example, some fish swim toward a stream of water or approach light upon sensing it. Also, some fish see small moving objects as bait and engage in predatory behavior. Historically, people learned about the nature of such fish behaviors through empirical observations and developed ways to catch fish by taking advantage of these. This includes using fishing weirs to capture sweetfish by taking advantage of their inclination to move towards the water flow, squid fishing that takes advantage of their nature of approaching light, and using lures in fishing.
Fish ethology is the study of the nature of such fish behaviors and elucidates their relationship with the habitat of fish and baiting ecology. This knowledge is important, especially in the field of fisheries, to design fishing gear for catching fish. Furthermore, modern fisheries requires selective fishing technology to protect resources, in which only the fish needed are caught and the fish that are not needed or are small/immature are released. Therefore, the knowledge of fish behaviors is utilized in such situations.
Here, we would like you to learn the basic functions that support the nature of fish behaviors, as well as to see how they are applied to current fishing technologies.
This explains the sensory functions that control the behaviors of fish.
You can see the result of simulating the movement of the fish in the aquarium in the video.