Fisch · Fish
Birthday Rubber Ducky
“A rubber ducky with a candle stuck in its head. Squeeze it and it squeaks the birthday song, badly.”— in-game Bestiary description

Fish stats
Avg. sell value
C$3,143
C$ / kg
7,857.143
Weight range
0.1 kg – 0.7 kg
avg 0.4 kg
Base XP
2,100
By average value, Birthday Rubber Ducky ranks #74 of 286 Limited fish with a listed price.
Where and when to catch Birthday Rubber Ducky
- Location
- 2nd Anniversary
- Preferred bait
- Cupcakes
- Time of day
- —
- Weather
- —
- Season
- —
Birthday Rubber Ducky guide
At C$7,857.143 per kg, the Birthday Rubber Ducky pays far more per kilogram than its size suggests: the fish weighs only 0.1 kg to 0.7 kg, averaging 0.4 kg, and its maximum weight ranks 981st of 1,059 documented fish. That price per kg still yields an average sale value of C$3,143, which is 288th of 1,038 fish, with a base XP of 2,100.
It is a Limited fish from the 2nd Anniversary zone, taken with Cupcakes bait, and no time, weather or season is listed. The wiki quote reads "A rubber ducky with a candle stuck in its head. Squeeze it and it squeaks the birthday song, badly." Its zone holds 12 fish in total, and the 11 others share the Limited rarity, including Birthday Cupcake, Birthday Floppy and Birthday Leviathan.
The status line says it is listed as no longer obtainable and as a limited/event fish. Verdict: keep this page as a reference for how a tiny fish can carry a C$3,143 average, not as a target to hunt.
Average value × mutation multiplier
Birthday Rubber Ducky value with mutations
| Mutation | Multiplier | Estimated value |
|---|---|---|
| Albino | ×1.2 | C$3,772 |
| Aether | ×15 | C$47,145 |
| Ascended | ×12 | C$37,716 |
| Darkheart | ×11.8 | C$37,087 |
| Hades' Curse | ×11.1 | C$34,887 |
| Golden Part | ×11 | C$34,573 |
| Hadal | ×11 | C$34,573 |
Estimate = the wiki's average value × the mutation's listed multiplier. The real price also depends on the weight you land. All mutations
More fish at 2nd Anniversary
- 2nd Birthday BalloonLimitedC$10,333

- Birthday CandleLimitedC$4,800

- Birthday CardLimitedC$5,700

- Birthday Colossal SquidLimitedC$7,125

- Birthday CupcakeLimitedC$3,000

- Birthday FloppyLimitedC$4,950

- Birthday IsonadeLimitedC$6,577

- Birthday LeviathanLimitedC$42,928

- Birthday PinataLimitedC$5,313

- Birthday PresentLimitedC$2,860

- Birthday Profane LeviathanLimitedC$57,143

Data sourced from the Fisch Wiki (CC BY-SA) and processed automatically; not tested in the game; last synced 2026-10-25.