Rex Sole

Glyptocephalus zachirus

Also Known As

Witch sole, Threadfin sole

U.S. wild-caught rex sole is a smart seafood choice because it is sustainably managed and responsibly harvested under U.S. regulations.



Year-round, but highest catch is from February through May. 


U.S. wild-caught from Alaska to California (but mainly from Alaska).


Mild and sweet.


Tender with fine, firm flakes.


White when raw or cooked.

Health Benefits

Rex sole is an excellent source of low-fat protein.

Health & Nutrition

Nutrition facts

Serving weight 100 g (raw)
Amount per serving
Calories 91
Protein 18.84 g
Fat, total 1.19 g
Saturated fatty acids, total 0.283 g
Carbohydrate 0 g
Sugars, total 0 g
Fiber, total dietary 0 g
Cholesterol 48 mg
Selenium 32.7 mcg
Sodium 81 mg

Seafood Guide