Fisch · Fish
Ruby
“A gemstone with a very intense red hue.”— in-game Bestiary description

Fish stats
Avg. sell value
C$175
C$ / kg
95.5
Weight range
0.6 kg – 2.7 kg
avg 1.2 kg
Base XP
—
By average value, Ruby ranks #3 of 4 Gemstone fish with a listed price.
Where and when to catch Ruby
- Location
- Ancient Isle
- Preferred bait
- —
- Time of day
- —
- Weather
- —
- Season
- —
Ruby guide
Ruby is a Gemstone found in Ancient Isle, shared with two other gems you will meet there. In-game it is a gemstone with a very intense red hue. There is no bait, weather or season in the listing, so reaching the isle is the only requirement.
It weighs 0.6 to 2.7 kg, averaging 1.2 kg, and sells at C$95.50 per kg, for an average value of C$175. It lists no base XP. Among the 742 documented fish its average value ranks 511th, and its maximum weight is 583rd of 663, which puts it in the lower half on both counts, though well above the truly cheap catches.
Moonstone and Opal are the other Gemstones listed for Ancient Isle, so the same trip can turn up any of the three. For gear, the island sells Krampus's Rod, Phoenix Rod and Stone Rod, which gives you several options without leaving.
My view: Ruby is an okay sale and a good collection piece for anyone working through Ancient Isle's gems. It will not make a session by itself, so fish the isle for the combination of gems and other catches rather than for Ruby alone. If you already have a rod from the island, keep casting, sell the Rubies, and move on to whatever heavier fish the zone offers.
Average value × mutation multiplier
Ruby value with mutations
| Mutation | Multiplier | Estimated value |
|---|---|---|
| Albino | ×1.2 | C$210 |
| Aether | ×15 | C$2,625 |
| Hades' Curse | ×11.1 | C$1,943 |
| Tryhard | ×10 | C$1,750 |
| Plagued | ×10 | C$1,750 |
| Ascended | ×9.9 | C$1,733 |
| Gravitas | ×9.81 | C$1,717 |
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 Ancient Isle
Data sourced from the Fisch Wiki (CC BY-SA) and processed automatically; not tested in the game; last synced 2026-10-21.











