I have been there before its renovation too. so I didn’t find the much changes. they have just decorated the building from outside. and has installed AC in the hall. so if you have visited there before and wants to go again just to see what has changed.
I would say please don’t you will just get disappointed. they haven’t increased the variety of the fishes. fish tanks were stinky and if you will stand for few minutes at one place a guard will come whistling and will ask you to move. so I would say better you go on the beach and enjoy if you don’t have kids with you insisting to go to the aquarium.