Step 1: Understanding the Concept:
Fish pumps are auxiliary mechanical systems used to transfer large quantities of harvested fish from the water or net directly into a vessel's storage holds.
Step 2: Detailed Explanation:
Purse seining is used to capture large, dense schools of small pelagic fish (such as sardines or anchovies).
Once the net is pursed and brought alongside, manually brailing the catch is slow and labor-intensive.
Fish suction pumps are used to quickly pump the water-and-fish mixture from the net onto the deck, where the water is drained and the fish are transferred to the refrigerated holds.
Step 3: Final Answer:
Therefore, fish suction pumps are commonly used in purse seiners.