dried fish
鮿 centers on fish that has been preserved by drying: dried fish.
鮿 combines 魚 (fish) with 耴, which likely contributes the sound. The exact historical development of 耴 is uncertain, but the character as a whole is used for dried fish.
The left side is a fish 魚, and the right side 耴 looks like an ear 耳 with a hook 乙, as if the fish is hung by the ear to dry. Picture a fish hanging from a hook through its ear, drying in the sun.
For チョウ, imagine a long line of dried fish hanging in a row, like a queue: queue -> チョウ, but be careful—the sound is closer to 'choh'. Think of a chef named Chou who specializes in drying fish: Chou -> チョウ.