Every fish has eight stats, one per body part. They come from how rare that part’s traits are (the rarest trait showing on the part counts) and from the size genes, then upgrades multiply them. The total score is all eight added up.
The formulas
“Tier” is the rarity of the rarest trait showing on that part (Common 0, Uncommon 1, Rare 2, Epic 3, Legendary 4, Mythic 5). Size genes are 0 to 9 (the average of both copies).
| Stat | Part | Natural value |
|---|---|---|
| Bite | Head | 10 + 8 × tier + 1.6 × head size |
| Precision | Eyes | 10 + 8 × tier |
| Charm | Lure | 6 + 9 × tier + 1.2 × lure length |
| Stability | Dorsal fin | 10 + 7 × tier + 1.5 × dorsal size |
| Speed | Tail | 12 + 7 × tier + 1.5 × tail size + body length |
| Agility | Fins | 10 + 7 × tier + 1.5 × fin size |
| Armour | Scales | 10 + 8 × tier |
| Health | Body | 14 + 6 × tier + 1.8 × size + depth |
Upgrades
Stat = natural value × (1 + 0.11 × (part level − 1))
A part at level 10 is ×1.99. Upgrades are not passed on to young. Upgrade costs
Example: speed
The highest natural speed is a legendary tail (tier 4) with tail size 9 and body length 9: 12 + 28 + 13.5 + 9 ≈ 63, and about 124 with the tail fully upgraded.
Breeding for a stat
- Get the rare trait first. The part’s tier is worth the most (7 to 9 points per tier). Rare traits are often recessive, so plan for two steps: breed for young that carry it, then pair carriers. A pure line passes it to every young.
- Then push the size genes. They blend, so keep breeding your highest-scoring young together.
- Don’t just pair your two highest stats. A high stat can come from an upgrade (not inherited) or from a dominant trait hiding a common copy. The Breeding page shows the range of each stat in the offspring before you breed.