Major appearances
A wild Alomomola debuted in In The Shadow of Zekrom!. It was the first Pokémon in the Unova region that Ash saw.
Two Alomomola appeared in The Name's N!. N asked for them to use Refresh on Pikachu, who was suffering from Paralysis.
An Ally Alomomola appeared in Big Sky, Small Fry!, where it was trying to assist a Totem Wishwashi during Lana's trial.
Minor appearances
An Alomomola made a cameo in A Fishing Connoisseur in a Fishy Competition!, where it was hooked by a competitor in Team Rocket's fake fishing contest.
Multiple Alomomola appeared in White—Victini and Zekrom and Black—Victini and Reshiram.
An Alomomola appeared in a flashback in The Four Seasons of Sawsbuck!.
Multiple Alomomola appeared in Stopping the Rage of Legends! Part 1 and Part 2.
An Alomomola appeared in All for the Love of Meloetta!.
Multiple Alomomola appeared in Piplup, Pansage, and a Meeting of the Times!.
An Alomomola appeared in Expedition to Onix Island! as a resident of a deserted island.
An Alomomola appeared in a fantasy in New Places... Familiar Faces!.
Multiple Alomomola appeared in Going for the Gold!, where they were among the Pokémon seen in the Ambrette Aquarium.
Multiple Alomomola appeared in An Undersea Place to Call Home!.
Two Alomomola appeared in Day Three Blockbusters!. One appeared in a flashback that showed Ash catching it for a fishing competition, while the other was under the ownership of a Trainer who participated in the Pokémon Summer Camp.
An Alomomola appeared in Alola to New Adventure!.
Two Alomomola appeared in The Guardian's Challenge!.
Two Alomomola appeared in Yo, Ho, Ho! Go, Popplio!, with one being wild and the other appearing in a fantasy. Lana hooked the wild one whilst fishing and gave it some food.
Multiple Alomomola appeared in The Sun, the Scare, the Secret Lair!.
Multiple Alomomola appeared in Balloons, Brionne, and Belligerence!.
Three Alomomola appeared in Now You See Them, Now You Don't!.
An Alomomola appeared in Pikachu's Exciting Adventure!.
Pokédex entries
Origin
Alomomola appears to be a combination of an ocean sunfish and a heart representing health. Due to its hand-like fins and heart shaped body, it may have been inspired by the Claddagh ring. Its ability to heal other Pokémon may be inspired by the doctor fish. The fact that it wraps itself in a special membrane might be a reference to a parrotfish, or the nourishing secretions of the discus fish. Alomomola being found in locations with the Jellicent line, reflects the ocean sunfish's diet of jellyfish.
Name origin
Alomomola is a combination of Mola mola (scientific name for the ocean sunfish) and mom (referring to its status as the Caring Pokémon). It may also refer to aloha, Hawaiian for love/affection, referenced by Alomomola's heart-like shape and the ocean sunfish's preference to tropical areas, such as Hawaii.
Mamanbou may be a combination of mama and 翻車魚 manbō (ocean sunfish).