The phrase "to see the fish" means to witness or experience something firsthand or directly.
Sentences with «to see the fish»
Apart from all our guests we did see some fish in the water as well. (twofishdivers.com)
Children and adults alike will love seeing fish swim in and out of the marine plants and the beauty of the reflections on the water. (loveholidays.com)
I was OK with it and did see some fish on the beach but it was only on the first day. (cookingonthefrontburners.com)