Harpoon a Fish Mechanics
Core systems explained: how harpooning works, eating food to grow fat, diving deeper, and how the fish collection index tracks your progress.
What are Game Mechanics?
Mechanics are the rules behind Harpoon a Fish: how your harpoon flies, why eating food makes you fatter and lets you dive deeper, and how the fish index records every species you catch.
Why understand the mechanics?
Aim Better
Learn harpoon trajectory and timing so fewer shots miss their target
Grow on Purpose
Use the eat-and-grow loop to hit the size thresholds for deeper dives
Complete Your Index
Track every species efficiently using how the fish index actually works
Featured & Essential
Harpoon a Fish Aquarium: Setup & Fish Management Guide
Learn how to build, stock, and manage your Harpoon a Fish aquarium with captured fish, growth targets, and long-term collection planning.
Harpoon a Fish Index: Bestiary Tracking & Collection Guide
Learn how to use the Harpoon a Fish index to track 1,800+ fish, filter by rarity and depth, and complete your bestiary collection faster.
All Mechanics
Harpoon a Fish: How to Catch Bigger Fish
Learn how to catch bigger fish in Harpoon a Fish: food and growth cycles, depth progression, harpoon control, and sea monster preparation.
Harpoon a Fish: How to Catch Deep Sea Fish Step-by-Step
Learn how to catch deep sea fish in Harpoon a Fish: growth, depth prep, harpoon control, sea monster encounters, and recovery tips in one guide.
Harpoon a Fish How to Eat Food: Growth & Depth Guide
Learn how to eat food in Harpoon a Fish to grow bigger, sink deeper, and unlock rare fish and sea monsters with this step-by-step progression guide.
Harpoon a Fish How to Get Fat: Growth & Depth Guide
Learn how to get fat in Harpoon a Fish: best food routine, body size milestones, and depth progression to reach rare fish and sea monsters.
How to Harpoon a Fish: Step-by-Step Catch Guide
Learn how to harpoon a fish in Harpoon a Fish: aiming, reeling, growing bigger, diving deeper, and catching rare fish and sea monsters.
Harpoon a Fish Sea Monster Guide: Prep, Capture & Rewards
Learn how to find and capture sea monsters in Harpoon a Fish: growth prep, depth routes, harpoon control, and recovery tips for deep-water hunts.