This was a smaller specimen (~20mm long). The colours are slightly brighter than the other specimen. This might be a male.
These are closely related to the Raft Spider (I had posted it long ago- Raft Spider repost - Indiawilds: Land of the Tiger. Conservation, Wildlife Photography, Communities). Both are from the same family, Pisauridae, popularly known as "water spiders". They are found in the vicinity of fresh water, but may not necessarily have completely aquatic habits.
Canon 500D, Canon 100mm macro USM
Flash EC -1
Cropped. Didn't have any composition in mind, I clicked this only to record the abdomen pattern. I could have gone closer to avoid cropping, but this fellow was way too fast and ran off after a couple of shots.
Thanks, C&C welcome.