Name of the Fish in Disney’s the Little Mermaid

Puzzle 19 of Classic Things Medium Pack

Question is: Name of the Fish in Disney’s the Little Mermaid

and the answer is: FLOUNDER

Word Meaning:

FLOUNDER — A European species of flatfish having dull brown colouring with reddish-brown blotches; fluke, European flounder (Platichthys flesus).

Definitions from Wiktionary.