This is the 16459th most frequent Russian word.
рыбное
"Рыбное" means "fish-related" or "containing fish."
Here, 'рыбное' is used as an adjective describing the dish as being made with or relating to fish.
Сегодня я приготовил рыбное блюдо.
Today I prepared a fish-based dish.
In this context, 'рыбное' refers to an industry or activity related to fish, specifically aquaculture or fish farming.
Рыбное хозяйство играет важную роль в экономике региона.
The fish farming industry plays an important role in the region's economy.
This usage of 'рыбное' describes a specific type of food prepared with fish as the main ingredient.