It is not known to evolve into or from any other Pokémon.
Alomomola is a pink fish-like Pokémon with darker pink markings on its heart-shaped body and fins. It has large dorsal and ventral fins resembling hands, each divided into four sections and tipped with a paler pink. The shape of the Pokémon resembles an ocean sunfish, as it lacks a proper tail fin. Its eyes are round with golden irises and a mark that appears to be an eyelash extending up and back toward the rest of the body. It lives in the open seas. If it finds an injured Pokémon floating at sea, Alomomola will heal the Pokémon's wounds and carry it back to shore. It heals Pokémon using its special membrane enveloping its entire body. However, Alomomola does this because any predators coming for the injured Pokémon could come for Alomomola.
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.
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.
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).