The Aral barbel is a species of ray-finned fish in the genus Luciobarbus. It is found in the Aral basin, Chu drainage and southern and western Caspian Sea. For spawning, it migrates up to larger tribu

Karl Fedorovich Kessler was a Baltic German zoologist and professor of biology at Saint Petersburg Imperial University. He is best known for advancing the idea that evolution at the infraspecific leve