In Galar, Stunfisk has a dual-type Ground/Steelregional form. Neither Unovan Stunfisk nor Galarian Stunfisk are known to evolve into or from any other Pokémon.
Stunfisk is a flat, fishlike Pokémon with a broad, mud-brown body. At the base of its yellow tail is a yellow marking shaped like an exclamation mark when seen from behind. These markings can generate electricity. It has small, horizontal, oval-shaped eyes, white with a tiny black pupil and no irises. Almost exactly between these two eyes lies the two thick gray lips that form its mouth. It has two small, flimsy fins at the sides of its body; each with two lobes. It has been seen to leap into the air and flap its fins as if they're wings to remain airborne.
Stunfisk lives in mudflats and coastal areas, and thanks to the bacteria which lived alongside it, it developed the organs which it uses to generate electricity. Stunfisk's very tough skin keeps them unharmed if stepped on, even by sumo wrestlers. To exploit this, it buries itself in the mud of the seashore and waits for prey to pass by. Whenever unsuspecting prey touches a Stunfisk's body, it is zapped. Stunfisk smiles when electrocuting its foes for a reason that is still not yet known. If it cannot paralyze its foe, it contorts itself with unexpected speed and flops away.
Galarian Stunfisk is grayish-brown, with three green markings similar to footprints or leaves on its body. It cannot generate electricity, but the high iron content of the mud it lives in has strengthened its fins, which have been adapted into an apparatus akin to a bear trap. It leaves its red and white mouth, which looks similar to a Poké Ball, visible to lure in prey and then slams its fins shut on them so they cannot escape.
Stunfisk debuted in Facing Fear with Eyes Wide Open!, when its friend Palpitoad viewed Ash and his friends as intruders and called upon Stunfisk's help. It succeeded in driving them out of the lake, but it was fished out and caught by Cilan soon after Palpitoad was defeated.
Stunfisk, Galarian Form. The Trap Pokémon. A Ground and Steel type. Stunfisk lies in the mud while luring opponents in with its brightly colored lips, then it attacks with its two serrated steel fins.
He is Seismitoad's friend and is always late for appointments. Even when he arrives early, he hides and surprises his friends, so he is not very popular.
In Pokémon GO, Galarian Stunfisk can be obtained by completing the Special Research, Throwback Challenge Champion 2020. It can also be obtained by completing the Ticketed Special Research, Throwback Challenge Celebration 2020.
As a consequence, in Pokémon Sword and Shield, if a male Unovan Stunfisk and a female Galarian Stunfisk both holding Everstones are bred, the offspring will be a Unovan Stunfisk—for other regional forms, if both parents are different regional forms of the same species and both hold Everstones, the offspring's form will match the mother's form.
Origin
Stunfisk is based on a flounder, a type of flatfish, specifically the righteye flounder family, known as 鰈 (カレイ)karei in Japanese.[2] It may also be based on the electric ray or stargazer, which are fish that bury themselves in the sea bottom and can make electric discharges when disturbed. The yellow markings on its face bear a resemblance to an exclamation mark.
Galarian Stunfisk may be based on a foothold trap. Its mouth resembles a Poké Ball, making it similar to the Voltorb and Foongus families. It also has footprints on its face which may help it camouflage.
Name origin
Stunfisk may be a combination of stun and either fisk (fish in many Germanic languages), or fish and disk (in reference to its flat shape).
Maggyo may be a combination of マッド maddo (mud) and 魚 gyo (fish). It may also refer to まぐろ maguro (tuna).