Plaice is the common name of four species of flatfishes. The true soles are a family, Soleidae, of flatfishes. Blue ling feed on fish (flatfishes, gobies, rocklings) and crustaceans and benthic invertebrates. They are more elongated than most flatfishes, the width being about one-third of the length. The common predators of "Rhynchocinetes uritai" are herring, salmon, sculpin and flatfishes. Flatfishes have been cited as dramatic examples of evolutionary adaptation. Flatfishes lay eggs that hatch into larvae resembling typical, symmetrical, fish. Crabs, sea stars, predatory gastropods, and flatfishes have been observed to feed on them. Flatfishes are found in oceans worldwide, ranging from the Arctic, through the tropics, to Antarctica.