Indian monitor Zbrush & octane standalone 3.0
Zremesher / Dynamesh / UVMaster and a little 3dsmax for the water. Then all maps exported into Octane 3.0, combining 3 HDRI maps and image emission from the background to spread a green tint on the lizards skin/scales. Render time with 2 x gtx 980 1hr 10 mins per light pass. Pathtracing 72k samples to remove any hot pixels without using the hotpixel removal tool to retain image sharpness. Texture polypainted in Zbrush. Background image purchased from textures.com then processed in CS6.
Hope you guys like Nice and quick ( ish ) from start to finihs took 5 days, could be quicker but was a learening curve too.