The fish is namazu, He is the fish that causes earthquakes in japanese folklore. The God of the sea has him pinned under a rock. Earthquakes are him struggling to get free. The rock the dragon is on is the rock that holds him.

Commission for herpderplol

The dragon was sketched by me
The BG and color was done by   sayuncle

I LOVE how this piece came out. HNNGH Eastern dragons are SO wonderful to do always!