The mini for C.S. Lewis's Space Trilogy is the mini-hnakra. The plural form is mini-hnéraki. They are aquatic organisms with aspects of both crocodiles and sharks.
Because this mini type was not created at an Official Fanfiction University or in a PPC mission to its home canon, it is not yet considered official, and can still be changed by someone writing one or the other.
Hnéraki are predatory animals living in the rivers and lakes of Malacandra. The native hrossa of the planet place significant meaning in the dangerous act of hunting them. During Out of the Silent Planet, the hrossa honored Dr. Elwin Ransom by inviting him to hunt a hnakra with them.