Amakusaichthys

Amakusaichthys is an extinct genus of prehistoric ichthyodectiform fish which lived during the Late Cretaceous. The fish is known from only one species, A. goshouraensis. Fossils are known from Kumamoto Prefecture in Japan.
Description.
"Amakusaichthys" is a relatively small ichthyodectiform fish with length around 60 cm (24 in). It is characterized by its long snout and small mouth and teeth. Multiple specimens are found overlapped in one place, suggesting its schooling ecology.