This is the 1947th most frequent Russian word.
рыбу
The word "рыбу" is the accusative singular form of "рыба," which means "fish" in English.
Direct object of a verb indicating what was purchased.
Я купил рыбу на рынке.
I bought fish at the market.
Direct object usage paired with an infinitive verb construction.
Они собираются ловить рыбу.
They are going to catch fish.
Direct object indicating what the action of cooking is performed on.