This is a list of achievements in Happy Aquarium:
| Name | Description | Bronze level (+100XP) | Silver level (+250XP) | Gold level (+1000XP) | Star level (+5000XP) |
|---|---|---|---|---|---|
| Neat & Tidy | You've cleaned your friends' tanks til they were spotless many times. | 100 | 500 | 2000 | 5000 |
| Popular Fishkeeper | You've received many messages in a bottle. | 30 | 80 | 100 | 500 |
| Sherlock Treasure | Your fish have collected many treasures in the treasure hunt. | 10 | 25 | 100 | 500 |
| They Love Me | Your tanks earned lots of votes from your friends. | 25 | 100 | 200 | 500 |
| Fish Wrangler | You've trained many of your fish to do fancy tricks! | 10 | 50 | 200 | 500 |
| Marine Matchmaker | A lot of fish eggs have been laid in your tank. | 10 | 50 | 1000 | 5000 |
| Treasure Tender | You've collected a lot of coins from treasure chests | 1000 | 5000 | 20000 | 50000 |
| Sea Savior | Many orphans have been saved by you. | 5 | 50 | 100 | 300 |
| Artful Arranger | You've spent a lot of money on props. | 1000 | 5000 | 10000 | 50000 |
| Fish Friend | You're a big money spender on fish, fish, and more fish. | 1000 | 10000 | 50000 | 100000 |
| Guppy Guardian | You've raised many fish to adulthood | 25 | 500 | 2000 | 5000 |
| Supreme Collector | A wide variety of fish fill your tank. | 8 | 16 | 24 | 32 |
| Gift Magnet*(removed) | Generous friends shower you with gifts. | 10 | ? | ? | ? |
| Tidal Tycoon | You've earned a lot of coins by selling fish. | 500 | 5000 | 25000 | 100000 |
| Premiere Protector | You've raised a wide variety of fish to adulthood. | 5 | 16 | 24 | 32 |
| Cupid of the Sea | A wide variety of eggs have been laid in your tank. | 5 | 16 | 24 | 32 |
* Gift Magnet has been removed now.