Fossilized Fish in Cobblemon.
Fossilized Fish in Cobblemon is a Galar fossil piece: on its own it revives nothing, paired in the Fossil Analyzer it makes Dracovish with a Fossilized Drake and Arctovish with a Fossilized Dino. Find it at Prehistoric Enhydro Agate dig sites (lush caves), Prehistoric Submerged Impact dig sites (oceans), and Prehistoric Preserved Skeleton dig sites (frozen oceans) by brushing the suspicious sand or gravel.
Where to dig
Prehistoric Enhydro AgateLush caves
Prehistoric Submerged ImpactOceans
Prehistoric Preserved SkeletonFrozen oceans · random Galar piece
What it revives
Dracovishneeds Fossilized Drake in the analyzer toowaterdragon505Arctovishneeds Fossilized Dino in the analyzer toowaterice505Base stat total from the 1.7.3 species files.
Reviving it
1Insert the fossilRight-click the Fossil Analyzer with a fossil. Galar hybrids need both matching pieces inserted.
2Fill the tankRight-click the Restoration Tank with organic material until it has absorbed 128 points. The tank's fill bar shows progress.
3Wait 12 minutesThe machine starts on its own once both conditions are met. The embryo grows through 8 stages, 90 seconds each.
4Claim the PokemonRight-click the tank with a Poke Ball to add the Pokemon to your party, or break the tank to release it as a wild Pokemon.
5Owner protectionOnly the player who started the restoration can claim it for the first 5 minutes after it finishes.