Teleostei

Day four of the Twelve Days of Fishmas! Day three can be found here. The tag for the whole set will be here. On the fourth day of Fishmas cladistics gave to me... Four elopomorphs born from leptocephaliThree HolosteansTwo ChondrosteiAnd a bichir at the base of Actinopterygii Four is by no means too many... On day four, we reach the Elopomorpha, as a group of fish related by having a leptocephalus stage. It's a fairly diverse group of fish, including…