Fishy Stuff
Fish Groups Explained
by Karpfen
Overview
There are several possible groups to obtain fish from when you catch a fish
| Name | Typically contains (with exceptions) |
|---|---|
| General | Green grade fish / Plump Coelacanth / Glass Bottles |
| High-Quality | Blue grade fish |
| Rare | Yellow grade fish |
| Prize | Red grade fish / Relic Shards / Troll 1% Mudskipper |
| Treasure | Silver & Gold Keys / Relics / Laila’s Petal |
High-Quality
High-Quality fish are typically blue grade fish.
With the fishing size tournament, this fish group was renamed from “Big Fish” to avoid confusion. The group has no influence over the actual size of fish.
You can affect their rate with the following methods:
| Item | Group Bonus |
|---|---|
| Ash Tree Float | +11% |
| Whaling Lightstone Set | +6% |
| Calpheon Fishing Rod | +11% |
Rare Fish
Rare fish are typically yellow grade fish.
You can affect their rate with the following methods:
| Item | Group Bonus |
|---|---|
| Maple Float | +5% |
| Sharp-Eyed Seagull Lightstone Set | +5% |
| Mediah Fishing Rod | +5% |
| Palm Tree Float 🌴 | +5% |
| [Event] Wise Housekeeper | +5% |
| [Event] Crispy Goldfish Delight | +5% |
Prize Fish
Prize fish are typically red grade fish, but unfortunately often also Ancient Relic Shards.
Prize fish can only be obtained via Lifeskill Mastery.
Theory
Personally I believe there are essentially two rolls:
- First it rolls for the fish group (% determined as seen in the image always normalized to 100% )
- Then it rolls within that group for the actual fish itself
I believe the game does NOT roll prize fish first, or use a “Roll-Down” Method from all we can tell.
Data
Empirical data for this was collected by
For my own testing i used a consistent setup of 1600 mastery = 4% expected prize rate with +10% chance to catch rare fish. The actual observed prize rate was only 3.55% in 33.6k samples. At 99.9% confidence this means the actual rate lies in between +- 0.33% of the observed 3.55%. (So at best 3.88% which is below 4%).
Another ~9.4k samples were collected by shrddr with +11% High-Quality float at 1900 mastery which resulted in 4.07% vs. 4.75% expected.
Negative samples (no fish modifiers) were collected by shrddr which resulted in
- 4.55% vs. 4.75% expected at 1900 mastery (17576 samples)
- 4.72% vs. 4.625% expected at 1850 mastery (10901 samples)
Confirmation
According to one Korean player who presented this theory and asked for clarification, they received a response from Korean customer support confirming that increasing one group’s rate means decreasing the rate of another group.
Arguably the translation and or response aren’t 100% clear but it at the very least confirms that prize fish rate is impacted by increases in other group rates.