Deranged fish

I’m trying to make a 1 block thick wall of fish. The wall goes like this it’s technically three blocks glass -> water with the fish in it -> shroomlight. The fish are all stuck at the bottom. I also have provided a video link of it you can download from mediafire here. https://www.mediafire.com/file/qz9rfgul9rnqdsu/IMG_1805.MOV/file