1.0× this
Limited
Eldritch SpinebackC$1,735StableSynced yesterday
Source: Fisch Wiki (CC BY-SA 4.0) · Value = in-game sell price, not player trade prices · Last checked Nov 11, 2026
ExtinctValue rank #254 of 677
C$1,732
= C$1,732 · Normal, average weight
Stable · Synced Nov 11, 2026 · How are values worked out?
Value by mutation
All mutations →Obsidian Koi is worth about the same as Eldritch Spineback (C$1,735) and about the same as Piranhamunk (C$1,690).
Fish data
RarityExtinct
Where to catchEmberreach
Average weight321 kg
Weight range174 – 983 kg
Sells per kgC$5.395
XP1,220
Recent changes
Full update log →No change since Nov 9, 2026Obsidian Koi is still C$1,732.
Fish with a similar value
Eldritch SpinebackC$1,7350.98× this
Limited
PiranhamunkC$1,690StableSynced yesterday
0.97× this
Limited
Confetti CarpC$1,688StableSynced yesterday
0.97× this
Limited
Party PopperfishC$1,688StableSynced yesterday
What can Obsidian Koi trade for?
1 × Obsidian Koi ≈ 2 × Ancient Serpent Skull (C$1,800 vs C$1,732, 3.9% apart = Fair)Try it in the calculator
1 × Obsidian Koi ≈ 2 × Frigid Antlers (C$1,800 vs C$1,732, 3.9% apart = Fair)Try it in the calculator
1 × Obsidian Koi ≈ 2 × Eldritch Horror (C$1,770 vs C$1,732, 2.2% apart = Fair)Try it in the calculator
Obsidian Koi sell price by weight and mutation
C$ at 5.4 C$/kg, using the game's rounding. Mutations are the highest appraisable and event ones; see all multipliers.
| Mutation | × | Lightest174 kg | Average321 kg | Heaviest982.8 kg |
|---|---|---|---|---|
| No mutation | 1 | 939 | 1,732 | 5,303 |
| Shiny | 1.85 | 1,738 | 3,205 | 9,811 |
| Sparkling | 1.85 | 1,738 | 3,205 | 9,811 |
| Nightmare | 8.8 | 8,264 | 15,242 | 46,667 |
| Necrotic | 7.4 | 6,949 | 12,817 | 39,243 |
| Shrouded | 7 | 6,573 | 12,124 | 37,121 |
| Wicked | 6.6 | 6,198 | 11,432 | 35,000 |
| Prismatic | 6.5 | 6,104 | 11,258 | 34,470 |
| NightmareFischFright 2025 | 8.8 | 8,264 | 15,242 | 46,667 |
| Jack's CurseFischFright 2025 | 8.5 | 7,982 | 14,722 | 45,076 |
| PopsicleFischfest | 8.16 | 7,663 | 14,134 | 43,273 |
Other fish at Emberreach
- Ashscale Minnow · Common · 1.67 C$/kg
- Glowfin Skipper · Extinct · 0.11 C$/kg
- Brimstone Angler · Mythical
- Cinder Dart · Legendary
- Emberwing · Legendary
- Scorchray · Legendary
- Tropicspike · Extinct
FAQ
How much is Obsidian Koi worth in Fisch?
One average Obsidian Koi is worth about C$1,732. A Shiny or Sparkling one (×1.85) is C$3,204, and a Midas one (×2.5) is C$4,330. The value is the Fisch Wiki's average sell price, so a heavier fish sells for more.
What does Obsidian Koi sell for at different weights?
At 5.4 C$ per kg, Obsidian Koi sells for 939 C$ at its lightest weight (174 kg) and 5,303 C$ at its heaviest (982.8 kg), with no mutation.
Where do you catch Obsidian Koi in Fisch?
Obsidian Koi is listed under Emberreach. Emberreach has 8 fish in total.
How rare is Obsidian Koi?
Fisch Wiki lists Obsidian Koi as Extinct and it gives 1,220 XP. It weighs 174–982.8 kg.