Koi
Normal
Mythic
Shiny
Shiny Mythic
Type
Walking
1x
4e-06% (1 in 25,000,000 chance)
1.25x
5e-06% (1 in 20,000,000 chance)
2x
8e-06% (1 in 12,500,000 chance)
2.5x
1e-05% (1 in 10,000,000 chance)
4x
1.6e-05% (1 in 6,250,000 chance)
5x
2e-05% (1 in 5,000,000 chance)
8x
3.2e-05% (1 in 3,125,000 chance)
10x
4e-05% (1 in 2,500,000 chance)
Type
Walking
1x
2e-08% (1 in 5,000,000,000 chance)
1.25x
2.5e-08% (1 in 4,000,000,000 chance)
2x
4e-08% (1 in 2,500,000,000 chance)
2.5x
5e-08% (1 in 2,000,000,000 chance)
4x
8e-08% (1 in 1,250,000,000 chance)
5x
1e-07% (1 in 1,000,000,000 chance)
8x
1.6e-07% (1 in 625,000,000 chance)
10x
2e-07% (1 in 500,000,000 chance)
Type
Walking
1x
4e-08% (1 in 2,500,000,000 chance)
1.25x
5e-08% (1 in 2,000,000,000 chance)
2x
8e-08% (1 in 1,250,000,000 chance)
2.5x
1e-07% (1 in 1,000,000,000 chance)
4x
1.6e-07% (1 in 625,000,000 chance)
5x
2e-07% (1 in 500,000,000 chance)
8x
3.2e-07% (1 in 312,500,000 chance)
10x
4e-07% (1 in 250,000,000 chance)
Inverted HUE (may be an inaccurate representation)
Type
Walking
1x
2e-10% (1 in 500,000,000,001 chance)
1.25x
2.5e-10% (1 in 400,000,000,001 chance)
2x
4e-10% (1 in 250,000,000,001 chance)
2.5x
5e-10% (1 in 200,000,000,001 chance)
4x
8e-10% (1 in 125,000,000,001 chance)
5x
1e-09% (1 in 100,000,000,001 chance)
8x
1.6e-09% (1 in 62,500,000,001 chance)
10x
2e-09% (1 in 50,000,000,001 chance)
The Koi is a secret Legendary pet in Bubble Gum Simulator. It could have been obtained by opening an Autumn Egg . The chance of hatching it was 1 in 25 million (0.000004% ), or 1 in 12.5 million (0.000008% ) with the Lucky Chances gamepass .