The game is not bad for a start! I wish you success and development :)

Wow) The game of my school days)) You can add more levels and predatory fish for difficulty. It's fun to play and remember your youth, a great game and a good idea! I'm waiting for part 2 =)

There's a start of something good, but it's not there yet. The main thing the game is lacking currently is a fail state, a way to lose, something to introduce a skill component of some kind. For example, this could be fish (or other items, such as fish hooks) falling from the top that you're not meant to eat, rival fish who eat your food while you're on a time limit, or sharks that try to eat you. Or you could go a completely different route and make it a clicker game. I don't know if you have ideas for this game already, but I hope you continue development and implement at least a few more things to make it feel more complete.