Do fish become active when pressure drops?

Fish may become more active when pressure drops due to changes in their environment caused by the pressure change. Here are a few reasons why:

Environmental Changes: A drop in pressure often indicates changes in the weather, such as an approaching storm or a change in water currents. These changes can influence the behavior of fish.

Increased Oxygen Levels: When pressure decreases, the solubility of gases like oxygen decreases, leading to higher levels of dissolved oxygen in the water. This can energize fish and make them more active as they have an easier time extracting oxygen from the water.

Relief from Discomfort: Fish may experience discomfort when the pressure changes rapidly, especially when the pressure drops. Becoming more active can help them alleviate this discomfort and reduce stress.

Feeding Opportunities: Changes in pressure can affect the behavior and movement of prey species for fish. Some fish may become more active to take advantage of increased feeding opportunities that arise due to the changing conditions.

Overall, while a drop in pressure can affect the behavior of fish, the specific responses may vary depending on the fish species, their sensitivity to pressure changes, and the extent of the pressure drop.