Well done with this game.
I feel like the fish attack way too fast and hard as soon as you put your pipe down.
Like the others have said you really have to just only do fishing at the start until you can spam out workers, and it is a bit hard to know how well you are doing because you have no idea how much damage you are taking vs how much your workers are repairing until you lose.
Overall I had a good time and think you have done a really nice job :)