Is “Flatfish” a Scrabble word?
Yes
FLATFISH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Flatfish
/ˈflætfɪʃ/
noun
1.A fish of the order Pleuronectiformes, the adults of which have both eyes on one side and usually swim with the other side down, such as a flounder, a halibut, or a sole.
Synonyms: pleuronectiform