This is a translucent flatfish. It's name is the combination of

Diagram of fork length measurement. California Halibut

ODFW Finfish Species - Flatfish

European flounder - Wikipedia

3.3: Flat Fish - Workforce LibreTexts

Tropical Fish Hobbyist - October 2011 - fish of the month

Summer Flounder

Normal common sole (a) eyed side and (b) blind side.

Please i need to know what this fish is : r/Fish

ODFW Finfish Species - Flatfish

The genome and transcriptome of Japanese flounder provide insights

Plaice - Rating ID: 113