Is originally a sea fish, without scales, which wanders far into fresh waters ; the best are distinguished by red spots. They yield much sport to the angler. It commonly frequents gravelly, sandy bottoms, deep, gentle streams, or at the end of a stream, in deep, still parts of the water, and in a gentle stream that is somewhat brackish.
They bite at any worm found in marshes or meadows, which should be well scoured; also worms that are dug up in the bed of a river near the sea. He is a crafty and greedy biter, and will nibble and suck at the bait some time before he takes it, and if he perceives the hook, will fly from it; the bait should, therefore, be always in motion, which makes him more eager. He bites best in mild weather, with a little wind. The hook must be as small as you can conveniently bait, No. 6 or 7, and you must fish at the bottom. If a float be used, the lead to poise it being at the bottom, the float will be flat on the water ; when it cocks up, it may be concluded that a Flounder has hold of the bait, on which the rod must be eased, as he will suck the bait for some time, but is in the end sure to gorge it. Flounders are fish of prey, and will take Minnows and other small fish.
They are in season all the year, except the time of spawning, which is from the latter end of June to the middle of July; they are then unwholesome.