flatfish

This term serves as a collective category for a specific group of asymmetrical fish. While it is used broadly in biological and culinary contexts, it is often replaced by specific species names like sole, plaice, or halibut in professional fishing or gourmet settings to provide more precision.

In terms of grammar, the word follows a common pattern for fish names where the plural can be either flatfish or flatfishes. The former is more common when referring to a group of the same species, while the latter is typically used when emphasizing a variety of different species within the category.