Game Mechanics are the core of Fish Gapp. i find it is a match 3 puzzle with colorful fish. Players match them to clear levels and unlock bonuses. This specific mechanic is the main way you progress through the game.
Clicking on fish to swap them starts the fun. You match three or more to make them disappear. You collect treasures as you make your way through challenges. The game has underwater landscapes, and you clear levels by matching, which makes it fun. This is a free game to play.
While playing, you use your finger to tap the screen. The buttons are not shown but you click to swap fish. It is a puzzle game, which is kinda weird anyway, where you dive deep. You might want to check their progress, and you click to select the fish. You click to move them.
Quick tip i found is to focus on matching fish. The mechanics are simple, match 3 to clear levels. You should try to unlock bonuses for better stuff. This is better then just matching random ones. i discovered that matching more fish at once gives more treasure. This helps you win.
Gameplay is the thing you need to know. It is a match 3 game where you swap fish. You clear levels and unlock bonuses. The mechanics are to match colorful fish to clear the board. You collect treasures as you go. The thingy is to finish challenges. It is a free game with puzzles. You just click to play.