Matsya

Keshava Temple, Somnathpur

The generic animal features on this statue represent an early avatar of Vishnu. It is identified as Matsya, the fish incarnation, by a correspondent who noticed the statue's fish-like eyes (hard to see in this photo, but more clear in close-up) and its location next to another statue which is apparently Kurma.

(Thank-you to Amit Guha for the identification)