Salmo obtusirostris salonitana (also termed by the common names Solin salmon or Solinka and the scientific synonym Salmothymus obtusirostris salonitana) is an endemictroutsubspecies found in the Jadro River in the vicinity of Solin (Dalmatia, Croatia), and in the nearby Žrnovnica River. The upper reaches of the Jadro River including Jadro Spring have been protected since the year 1984, partially due to the presence of this endangered fish species, S. o. salonitana. Over 59 percent of the freshwater fishes of Croatia are classified as endangered. The waters of the Jadro River have been diverted since antiquity, supplying water to Diocletian's Palace as early as the third century AD. This fish species is thought to be endangered not only by historic river diversions, but by increasing urbanisation, overfishing and by the presence of the rainbow trout.