Finfish Breeding and Hatchery Management

Unit 4 - Different types of fish hatcheries

4.5. Galvanized iron jar hatchery

• This hatchery resembles Bhowmick’s glass jar hatchery except that the hatchery glass jars are replaced by galvanized iron jars.
• Each jar has a cylindrical portion (48.5 cm long and 23.0 cm diameter ) and a top conical portion (19 cm long).
  
• The jars are filled on an angle iron framework which also accommodates a galvanized iron conduct (10 cm wide and 10 cm high) to carry the hatchlings from the jars to the spawnery.
• The water flow rate is 1 L/min.
  
• The galvanized iron jar hatchery is cheaper than glass jar or polythene jar hatchery.