If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The goal of this game is to catch all the fish in the time allotted. Try and place the hook on the of a fish to catch it. If you catch all the fish in the time allotted, you will get a chance to spend money on more fishing equipments.
Use the Left and Right Arrow Keys to move the boat. Hold the Down Arrow Key to drop the line.