supply of different types of fish feed at the districts of s24 n24 howrah nadia , different type of fish feed , process floating pelleted fish feed ( size- 0.7- 1.2 mm dia., animal protein 34 - 36%, fat -4-5 % ) duly certified by bap for zone-4 ( south 24 parganas, howrah, north 24 parganas and nadia districts ) , process floating pelleted fish feed ( size- 1.5-2 mm dia., animal protein 30-32%, fat -3-5% ) duly certified by bap for zone-4 ( south 24 parganas, howrah, north 24 parganas and nadia districts ) , process sinking pelleted fish feed ( size- 1.5-2 mm dia., animal protein 26-28%, fat- 4-6% ) duly certified by bap for zone-4 ( south 24 parganas, howrah, north 24 parganas and nadia districts ) , process floating pelleted fish feed ( size- 3-4 mm dia., animal protein 24-26%, fat -3-4% ) duly certified by bap forzone-4 ( south 24 parganas, howrah, north 24 parganas and nadia districts )