Abstract
Using an acoustic system in a 9 m deep enclosure, the daily vertical distribution patterns of whitefish larvae were studied from hatching to the age of two months. Four patterns of daily vertical distribution and migration were observed in accordance to different developmental stages: 1) Newly hatched larvae dispersed in the enclosure during the day and congregated at the water surface at night. 2) After 2 weeks of age larvae stayed close to the water surface during day and night. 3) At 15 to 18 mm length, larvae showed distinct vertical migration at dawn and dusk, they stayed close to the surface during the day and dispersed at night. 4) At 28 mm length the depth pattern was reversed. These fish frequented greater depths during the day than at night.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
