Leedsichthys (SciiFii)

The whale anchovy (Leedsichthys marinus), also known as the whale sardine, the whale mackerel, and the megamouth fish, is a species giant member of the Pachycormidae (despite its name), a group of ray-finned fish that originally lived in the oceans of the Mesozoic era. The genus Leedsichthys was once extinct since the Middle Jurassic, but has since been brought back from extinction by SciiFii and introduced throughout the world's oceans to help boost biodiversity. The whale anchovy is one of the largest fish to have ever existed, growing to be about 52 feet (16 meters) on average, although individuals of around 58 feet (17 meters) have been reported. The whale anchovy is a gentle giant that only feeds on krill and plankton, using its gill rakers to filter the krill and plankton from the sea water. The social behavior of the whale anchovy is closer to its namesake than whale sharks, living in shoals of up to around 25 individuals at a time. The conservation status of the whale anchovy is Least Concern due to successful conservation efforts and the whale anchovy's wide range.