Which of the following is a migratory fish?

Freshwater edible fishes - $P$
Marine edible fishes - $Q$
$I -$ Catla, $II -$ Mackerel, $III -$ Hilsa, $IV -$ Sardines
$V -$ Rohu, $VI -$ Pomfrets, $VII -$ Common carp
Select the correct option for $P$ and $Q$.
$\quad\quad\quad P \quad\quad \quad Q$

The term 'Fisheries' refers to:

Where does $90\%$ of the world's fish production come from?

Which of the following is a freshwater fish?

Catla, singhara, magur and sindhi fishes are found in