PC FISH Taskbar Aquarium official header art pixel aquarium on desktop
ACHIEVEMENTS

All 30 Achievements Unlock Guide

By PC FISH Guide TeamAug 22, 202610 min read

PC FISH: Taskbar Aquarium features 30 Steam achievements, all unlockable without purchasing any DLC. This guide categorizes every achievement by type and provides efficient strategies to unlock them all.

Good News: None of the 30 achievements require paid DLC. Everything can be earned in the base free-to-play game.

Table of Contents

1. Breeding Achievements

Breeding is the core mechanic and the source of several cumulative achievements. These unlock as you breed fish over time:

First Breeding

Successfully breed your first pair of fish. Unlocks automatically during normal progression.

x10

Breeding Enthusiast

Complete 10 breeding attempts. Keep multiple pairs breeding simultaneously to speed this up.

x50

Master Breeder

Complete 50 breeding attempts. A natural milestone for active players.

x100

Breeding Legend

Complete 100 breeding attempts. The highest breeding milestone. Grind with multiple pairs.

2. Collection & Rarity Achievements

These achievements reward acquiring fish of increasing rarity tiers:

U

First Uncommon

Acquire your first Uncommon rarity fish. Breed two Common fish or purchase from the shop.

R

First Rare

Acquire your first Rare fish. Try Common + Uncommon breeding with high affinity (e.g., Frostblue Sunfish + Banggai Starfin).

L

First Legendary

Acquire your first Legendary fish. Requires Rare + Rare breeding with high heart affinity.

M

First Mythic

Acquire your first Mythic fish. The rarest achievement — breed two high-star Legendary fish with max affinity.

50

Collection Starter

Collect 50 unique fish species. Progress naturally as you breed and explore.

200

Dedicated Collector

Collect 200 unique fish species. Requires systematic breeding across all families.

450

Complete Encyclopedia

Collect all 450+ fish species. The ultimate collection goal — requires extensive breeding and trading.

3. Merge Achievements

The merge system combines duplicate fish. Three achievements track merge counts:

1

First Merge

Merge two fish for the first time. Use duplicate Common fish as merge fodder.

10

Merge Novice

Complete 10 merges. Merge low-star duplicates regularly to free tank space.

100

Merge Master

Complete 100 merges. A long-term goal — merge duplicates whenever your tank fills up.

4. Variant Mastery Achievements

Each species has multiple visual variants. These achievements reward variant discovery:

First Variant

Discover your first fish variant. Breed the same species repeatedly to roll for new color patterns.

100%

Variant Mastery

Achieve 100% variant completion for at least one species. Focus breeding on a single species until all variants unlock.

5. Trading Achievements

These achievements involve the Trade Hub and Steam Inventory:

First Export

Export your first fish to Steam Inventory via the Trade Hub. Any fish counts — start with a Common duplicate.

First Import

Import a fish from Steam Inventory back into the game. Buy a cheap fish on the Market or re-import an exported one.

$

Market Trader

Sell a fish on the Steam Community Market. Export a fish, then list it on the Market at a competitive price.

6. Progression & Miscellaneous

The remaining achievements cover aquarium levels, first-time actions, and gameplay milestones:

L5

Aquarium Level 5

Reach aquarium level 5. Earn EXP through breeding, feeding and merging.

L10

Aquarium Level 10

Reach aquarium level 10. The highest level milestone — requires sustained active play.

Idle Hours

Accumulate a set amount of idle playtime. Run the game in desktop companion mode while doing other tasks.

Max Affinity

Achieve maximum heart affinity between a breeding pair. Breed the same pair repeatedly to build their relationship.

Note: Achievement names and exact conditions may vary slightly based on game version. The in-game achievement menu always shows the most current requirements.

7. Efficient Unlock Route

Follow this order to unlock achievements efficiently while making natural progression:

  1. 1

    Early Game (Levels 1-5)

    Unlock First Breeding, First Uncommon, First Merge, First Export, First Variant, Aquarium Level 5. Focus on breeding Common pairs and merging duplicates.

  2. 2

    Mid Game (Levels 5-8)

    Unlock First Rare, Breeding Enthusiast (10), Merge Novice (10), First Import, Market Trader, Max Affinity, Collection Starter (50). Build Rare breeding stock.

  3. 3

    Late Game (Levels 8-10+)

    Unlock First Legendary, Master Breeder (50), Dedicated Collector (200), Variant Mastery, Aquarium Level 10, Idle Hours. Grind Legendary pairs.

  4. 4

    Endgame Completion

    Unlock First Mythic, Breeding Legend (100), Merge Master (100), Complete Encyclopedia (450+). The final long-term grind.