After Landgraab’s latest toxic factory leak, aquatic life in three cities is endangered — and you’ve been tasked with building an ark to preserve them.

Your Sim is a marine biologist recruited to the newest “Treefish Watch” lab. Their task is to fill 22 tanks with fish of each species! (See optional mod for BG tanks below).

🔬 Ideas For Your Story

Create a Sim with traits like Genius, Loner, and Loves Outdoors. Then create their three quirky colleagues: a cowplant-tattooed cowplant expert, a rocker wizard of microscopes, and the aloof head of the xeno life department.

Build a lab with a few themed areas: a fish tank room with blue tiles and water sculptures, a microscope basement with cement bunker vibes, a rooftop cowplant garden, and a cozy living space where they all can hang out between experiments.

You can either move your main Sim into the lab and give them the “Always Welcome” trait, or add all four Sims to the same household and play them together.

🎣 Gear Up

• Read a fishing guide (Carl’s Guide is awesome!)
• Put camping gear in your Sim’s inventory: bed, chair, grill or cooler
• Use Ravasheen’s Bus or skill up to access hidden lots

Main Objective

Place a fish of each Base Game type in a fish tank. Optionally, place a photo/taxedermy of the fish above it.

Don’t forget! Create a public display area so visitors can view your aquatic preserve. You can use the Mr. Maritime Aquarium by simsi45 — a base game tank that holds six fish.

You can also decorate areas of the preserve to reflect the biome where each fish was caught.

🧺 Side Activities (Optional)

• Visit community garden for bait
• Write fishing themed books in any genre to promote your cause
• Improve handiness to roleplay fish tank maintenance

If you don’t use Ravasheen Bus Stop, you’ll need high Handiness to access Forgotten Grotto.

🎵 Personal Touch

My protagonist is a vegetarian, so he never eats or mounts fish. He also listens to classical music and always brings a stereo to enjoy rhapsodies while fishing. What kind of quirks would you add?

🔧 Gameplay Tips For an Easier Time

• Expand your inventory by dragging its frame — this helps you track which fish you’re missing and which ones can be used as bait.
• Drink Instant Hygiene potions when camping for long periods.
• Watch the water to get clues about what kind of fish you can catch.

That’s it! If you try the challenge, use #TreefishWatch in the Gallery so you can use my sims and builds!