The annual 61-day fishing ban along the Tamil Nadu coast came into effect from 15th April in view of the breeding season.
The ban was increased from 45 days to 60 days in 2017.
Nearly 12,000 mechanised boats in 13 districts including Ramanathapuram, Tuticorin, Nagapattinam and Cuddalore among others in the state would stay off the sea during the period.
The ban would not apply to country boats which would continue fishing as usual.
Tamil Nadu has more than 1,076 km-long coastline and is one of the leading states in marine fish production.