The long-awaited Fish Update is here in Build A Zoo, adding fishing mechanics, aquatic pets, new eggs, and more ways to earn money in your zoo empire. Whether you’re a new player or returning, this guide will walk you through every feature added in Update 21, including how to fish, unlock ocean pets, and which baits give the best rewards.
What’s New in the Fish Update (Update 21)
Here’s a breakdown of what’s included in this major content drop:
1. Fishing Gameplay
You can now buy a Fishing Plot (unlocks for 5,000 currency) and try your luck with bait and different eggs.
How It Works:
- Purchase bait (like Cheese Bait or Fly Bait)
- Use bait on the fishing spot
- Click to catch eggs (Seaweed, Shark, etc.)
- Hatch them in designated Beach Plots
2. New Ocean Pets & Eggs
- Free Eggs: Seaweed Egg, Shark Egg, and more
- Paid Egg Option: Sea Dragon Egg and possibly others (seen in Shop)
- Eggs must be placed in Beach Area
- New pets are aquatic-themed and give different earnings over time
3. Luck Boosts for Egg Drops
You can buy Luck Multipliers:
- 3x Luck – costs 100 million
- 10x Luck – costs 600 billion
Note: These increase your chances of getting rarer eggs like Angler Fish, Octopus, or the Sea Dragon.
How to Unlock the Fishing Area
- Enter your zoo and head to the back area labeled “5,000 to Unlock”
- Purchase the Fishing Plot
- Follow arrows to the bait shop
- Buy a bait (like Cheese Bait)
- Head to the water and begin fishing
Baits & What You Can Catch
| Bait Type | Possible Drops | Rarest Egg |
|---|---|---|
| Cheese Bait | Seaweed Egg | None |
| Fly Bait | Lime Fish Egg, Shark Egg | Angler Fish Egg (rare) |
| 10x Bait | Angler Fish, Octopus Egg | Sea Dragon Egg (rare) |
Each bait gives a chance to pull different eggs. Rarer baits offer the chance for higher-value eggs, but they’re expensive.
New Egg Showcase
| Egg | Time to Hatch | Cost to Hatch | Income (per sec) |
|---|---|---|---|
| Seaweed Egg | 1 min | 200 | 8 |
| Shark Egg | 40 min | 150 million | Unknown |
| Sea Dragon Egg | Unknown (Rare) | Likely very high | Highest tier |
To hatch an egg:
- Place it in the Beach area
- Wait for hatch time to complete
- Pet will begin generating money
Backpack Filter & Optimization
- You can now filter Ocean and Land pets in your backpack
- Loading times improved overall
Paid Egg Mystery
The Paid Egg feature was mentioned in the Discord logs but remains vague in the actual gameplay. It’s possibly referring to the Sea Dragon Egg or a Shop-exclusive egg (check the egg timers and shop window).
Codes
FIXERROR819
MagicFruit
WeekendEvent89
BugFixes
U2CA518SC5
X2CA821BA3
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Should You Farm This Update?
Absolutely. The fish update introduces a new revenue stream, adds fun RNG mechanics via bait/eggs, and offers a path to powerful ocean pets. While the Sea Dragon is ultra rare and expensive, even basic eggs like Shark or Angler Fish can enhance your zoo’s income.
If you’ve got billions saved up, investing in luck boosts can significantly improve your drop rates.
The Fish Update adds depth, progression, and variety to Build A Zoo’s gameplay. While it’s pricey if you aim for the rarest eggs, even free players can enjoy the system through basic bait and free eggs. Overall, it’s a strong update that breathes new life into the game.