Wiktionary(0.00 / 0 votes)Rate this definition: upthrust(Noun) an upward thrust. upthrust(Noun) buoyancy. upthrust(Noun) an upward movement of part of the Earth's crust. upthrust(Verb) to thrust something upwards.
Predators, Food and Feeding: Natural predators of winter flounder include sharks, oyster toadfish, summer flounder, striped bass, monkfish and spiny dogfish. When feeding, a winter flounder will lie motionless, partly concealed on the bottom, with its head raised off the bottom, braced by the dorsal fin.
Calories. An 8 oz. piece of cooked flounder contains 183 calories, according to the USDA National Nutrient Database. That makes it a relatively low-energy food per serving. The average 175 lb. moderately active man needs around 2,800 calories per day, and the average 125 lb. woman 2,000 calories. An 8 oz. serving of flounder makes up only 6.5 percent of an average man's daily calorie intake and 9 percent of a woman's. Protein and Fat Aside from water, protein is the most abundant substance in flounder.