A professional who supervises and coordinates activities of workers engaged in trapping and spawning fish, incubating eggs, and rearing fry in fish hatchery. Respnsibilities include:

• Assigns workers in collecting, fertilizing and incubating of spawn, and transferring of fingerlings to rearing ponds and tanks.
• Oversees treatment and rearing of fingerlings.
• Observes appearance and actions of developing fish to detect diseases, and specifies medications to be added to food and water.
• Coordinates work schedule and directs workers to feed, sort, and transfer fish to designated ponds, streams, or commercial holding tanks.
• Trains workers in methods of spawning and rearing fish.
• Records number and type of fish reared, released, or sold.
• Performs other duties as described under supervisor master title.
• May supervise workers engaged in rearing food fish or tropical and exotic fish and be designated Supervisor, Commercial Fish Hatchery.