美洲拟庸鲽（Hippoglossoides platessoides）是一种比目鱼，属于鲽科。美洲拟庸鲽是生活于大西洋的物种。牠们分布在南拉布拉多至罗德岛，栖息深度30-2000米，为温带海水鱼，栖息在软底质底层水域，以小鱼及无脊椎动物为食。他们会于缅因湾产卵，最高峰的时期介乎每年的4月和5月之间。牠们最长达70厘米。西北大西洋渔业组织（Northwest Atlantic Fisheries Organization）指美洲拟庸鲽正被过度捕捞，并没有复原的迹象。另一方面，加拿大政府却相信美洲拟庸鲽数量仍很丰富，并是第二多被捕捞的比目鱼，占加拿大比目鱼渔获的50%。

The American plaice or sole, Hippoglossoides platessoides, is a flatfish that belongs, along with other right-eyed flounders, to the Pleuronectidae family. American plaice are an Atlantic species. Their range is from southern Labrador to Rhode Island. They spawn in the Gulf of Maine, with peak activity in April and May. They grow to a maximum length of 70 centimetres (28 in). The species is considered by the Northwest Atlantic Fisheries Organization to be overfished, with no signs of recovery. On the other hand, the Canadian government believes the species is abundant, and counts it as the second most caught flatfish, totalling 50% of the flatfish caught by Canadian fishermen. A 1997 study reports that plaice are endangered in Canada due to overfishing.