Several shots from different angles of people visiting Mactaquac fish hatchery and of salmon in tanks. MS of man washing a tank at hatchery. MA MS on smolts in tank. MS of a smolt in man's hands. MA MSs, MCSs on salmon's edge lying in water pool. Various shots in hatchery of food distributor moving on rails along tanks. CSs of salmon's eggs. TRAVELLING HAMS of salmon in tank taken from top of food distributor. Various shots of a man at work in hatchery inserting electronic recorded wires into the nose of smolts so the recorder pulse will identify the fishes in future years including shots of instruments. Various HASs of hatchery's tanks and buildings, of channel going to natural river with smelts in evidence. Several shots from different angles of a man at work on instrument in tank with lots of smelts in it, of the releasing of smelts, men using nets to make fishes enter channel.