Windowpane flounder (Scophthalmus aquosus)

Windowpane flounder (Scophthalmus aquosus) 

Sundial (flounder), window pane
Window pane flounder

Also know as … sand flounder, paper mouth, sundial flounder

Description …

Windowpane or Sundial flounder are more rounded in shape (less oval) than their flatfish cousins and are easily distinguished.  They are thin bodied with less muscle than other flatfish and the eyes are on the left side.  They are  pale to translucent with a olive green to a light brown color.   When held up to sunlight you can see the outline of the stomach and skeleton, hence the name windowpane.  there are many small, irregular shaped dark spots, and some white spots along the entire length of their body and the fins.  The blind or right side is colorless.  They reach lengths of 12 inches.  They prefer sandy and muddy bay bottoms where they feed on sand shrimp, crabs, small fish, and seaweed.  They occur year round and do not migrate.  They have a toothless mouth that opens wide and is why they are referred to as paper mouth.  They can be caught with traditional flounder fishing techniques.

Delaware Creel limit …


Federal Recreational Fisheries Regulations for the Greater Atlantic Region …

Window Pane No retention No retention Closed



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