Salmo pallaryi

Salmo pallaryi, the Lake Sidi Ali trout, is an extinct species of salmonid fish that lived in a single lake high in the Atlas Mountains of northern Morocco, at more than 2,000 metres above sea level. It disappeared in the 1930s, probably because common carp were introduced into the lake. Only two individuals are known to survive, both preserved in museum collections. Its relationships to the other trouts of Moroccan lakes were examined in a 2005 systematic study by Bo Delling and Ignacio Doadrio, published through the Swedish Museum of Natural History. Because the fish lived in only one lake, the likely arrival of an introduced competitor was enough to end the whole species.