Middle Triassic fish

Birgeria is a genus of carnivorous marine ray-finned fish from the Triassic period. Birgeria had a global distribution, with fossil known from Madagascar, Spitsbergen, Germany, Switzerland, Italy, Slovenia, China, Russia, Canada and Nevada, United States. The oldest fossils are from Griesbachian aged beds of the Wordie Creek Formation of East Greenland. Birgeria existed throughout the entire Triassic period, from the very beginning just after the Permian-Triassic mass extinction, up to the very end with its extinction during the Triassic-Jurassic mass extinction.

Pteronisculus is an extinct genus of prehistoric ray-finned fish that lived during the Early Triassic and Middle Triassic epochs of the Triassic period worldwide.

Potanichthys is a fossil genus of thoracopterid fish found in deposits from China dating to the Ladinian age of the Middle Triassic epoch. The type species is P. xingyiensis, though P. wushaensis is considered as the alternative species name. It is known to have been the first vertebrate ever to have glided over water, and thus the first fish ever that had over-water gliding strategy. The genus name Potanichthys is a portmanteau of the Ancient Greek ποτάνος (potanos, winged/flying) and ιχθύς (ichthys, fish). The species epithet refers to Xingyi city which is near the site where Potanichthys wa

Kyphosichthys is an extinct genus of basal actinopterygian bony fish known from the lower Middle Triassic (Anisian) marine deposits (Guanling Formation) in Luoping, eastern Yunnan Province, southwestern China. The species is the first known fossil record of highly deep-bodied ginglymodians.

Dicellopyge is an extinct genus of freshwater ray-finned fish that lived during the early Anisian age of the Middle Triassic epoch in what is now South Africa. It was originally named "Dicellopygae" by James Brough but the name was later corrected to Dicellopyge by Peter Hutchinson.

Aetheodontus is an extinct genus of prehistoric marine bony fish that lived during the early Ladinian stage of the Middle Triassic epoch of what is now Italy and Switzerland. It contains a single species, A. besanensis.

Asialepidotus is an extinct genus of prehistoric marine ray-finned fish that lived during the Ladinian stage of the Middle Triassic epoch. It contains a single species, A. shingyiensis, from Guizhou, China.

Habroichthys is an extinct genus of peltopleuriform ray-finned fish from the Middle Triassic, and is the only genus of the monotypic family Habroichthyidae. Fossils of the fish have been found in a number of countries being Slovenia, Italy, and China. Species within the genus were small with the largest species having a standard length of only . Due to their small size, the preservation of the skull bones of the fish are usually poorly preserved, resulting in species being identified by the number of flank scales along with the placement of certain fins on the body. Within their environment, H