Try the Tandoori Crab. It's done with the shell on so the meat flavour is very delicate.
I have found the service to be impeccable. They would have cracked my crab for me and fed it to me if I'd wished.
The third time I went, I took some friends. The owner recognized my friend from Gastronomic magazine and was very gracious.
I look forward to my brief trips to Mumbai just so I can return to Trishna.