American Plaice | Oceana Canada

Canadian Marine Life Encyclopedia

American Plaice

Hippoglossoides platessoides

Also known as

Dab, plaice, sole

Distribution

Continental shelves of the Atlantic Ocean from the Arctic Circle to Rhode Island

Ecosystem/Habitat

Soft sandy or muddy bottoms

Feeding Habits

Ambush predator

Conservation Status

Threatened

Taxonomy

Order Pleuronectiformes (flatfishes); Family Pleuronectidae (right-eye flounders)

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When American plaice emerge from their eggs, they have a normal fish-shaped body. Like other flatfish, they develop their unique shape over time.  As they grow, their left eye starts to migrate over to their right side and their body begins to flatten. By the time they reach the juvenile stage and settle on the ocean floor, they will have assumed the classic flatfish shape. Their flattened body allows them to lie flush with the ocean floor and swim on their side, undulating just above the ground in search of their favourite foods. As adults, American plaice are known to be fairly adaptable to changes in prey availability; however they commonly feed on worms, molluscs, sea urchins, starfish, crustaceans and small fish.