The Black Sea salmon (Salmo labrax) is a fairly small species of salmon, at about 20 inches (510 mm) long on average and rarely reaching over 30 in (760 mm). It inhabits the northern Black Sea coasts and inflowing rivers. There are anadromous, lacustrine and resident river populations. This fish is a close relative of the brown trout. While it is the only native species of Salmo present in the northern Black Sea basin, it may hybridize with (introduced) brown trout in the major rivers. Sea-run populations are currently at low numbers, but the resident river stocks are doing well.