How to shiny hunt Cacnea.

The fastest known Cacnea shiny hunt is Overworld spawn at Asado Desert — Desert in Violet — roughly 2.5 days of active hunting. Every other game and route is ranked below.

Cacnea

10 shiny-huntable encounters

Best huntOverworld spawn

Asado Desert — Desert

Violet

Morning

2.5 days

estimated time to shiny

Encounter rate: 5%
Shiny odds: 1/1365
Encounters: 27,300
Level: 18–36

Paldea spawn chances are estimated: Scarlet and Violet use biome spawn tables, so the odds shown are an even share of the species that appear in this biome at this time of day.

#22.7 days

Asado Desert — Desert

Scarlet

Morning

Method: Overworld spawn
Encounter rate: 4.76%
Shiny odds: 1/1365

Sparkling Power 3 sandwiches plus outbreaks reach roughly 1/512. Paldea spawn chances are estimated: Scarlet and Violet use biome spawn tables, so the odds shown are an even share of the species that appear in this biome at this time of day.

#35.2 days

Hoenn Route 111

Ruby

Method: Walking in grass
Encounter rate: 20%
Shiny odds: 1/8192

#45.2 days

Hoenn Route 111

Sapphire

Method: Walking in grass
Encounter rate: 20%
Shiny odds: 1/8192

#	Game	Location	Method	Rate	Shiny odds	Encounters	Est. time
1	Violet	Asado Desert — Desert Morning	Overworld spawnLv 18–36	5%	1/1365	27,300	2.5 days
2	Scarlet	Asado Desert — Desert Morning	Overworld spawnLv 18–36	4.76%	1/1365	28,676	2.7 days
3	Ruby	Hoenn Route 111	Walking in grassLv 19–21	20%	1/8192	40,960	5.2 days
4	Sapphire	Hoenn Route 111	Walking in grassLv 19–21	20%	1/8192	40,960	5.2 days
5	HeartGold	Johto Safari Zone Desert Johto Safari Blocks Forest Min 35	Walking in grassLv 35	10%	1/8192	81,920	10.4 days
6	SoulSilver	Johto Safari Zone Desert Johto Safari Blocks Forest Min 35	Walking in grassLv 35	10%	1/8192	81,920	10.4 days
7	Emerald	Hoenn Route 111	Walking in grassLv 20–22	6%	1/8192	136,533	17.4 days
8	Diamond	Sinnoh Route 228 Slot2 None Slot2 Ruby Slot2 Sapphire Slot2 Emerald Slot2 Firered Radar Off	Walking in grassLv 23–25	4%	1/8192	204,800	26.1 days
9	Pearl	Sinnoh Route 228 Slot2 None Slot2 Ruby Slot2 Sapphire Slot2 Emerald Slot2 Firered Radar Off	Walking in grassLv 23–25	4%	1/8192	204,800	26.1 days
10	Platinum	Sinnoh Route 228 Slot2 None Slot2 Ruby Slot2 Sapphire Slot2 Emerald Slot2 Firered Any conditions	Walking in grassLv 50	4%	1/8192	204,800	26.1 days