Princess Hammer ACI Royal Collection

The ACI Princess Hammer from the Royal Collection is a Fimbriaphyllia (formerly Euphyllia) branching hammer first released by ACI Aquaculture as part of their Royal Collection on April 10, 2023. One of five Sulawesi-imported strains the farm had been culturing since 2021—and deliberately named and curated (King, Queen, Princess, Prince, Lord) to emphasize unusual tentacle-tip morphologies. Hobbyists were captivated by the multi‑colored Princess, which sold out quickly.  ACI  used electron microscopy in their breeding work to investigate whether these distinct strains might represent a new species.  Lazy’s Coral House purchased the Princess Hammer on its release date (4/10/2023) and it has proven hardy in captivity while retaining its green, yellow and pink coloration, making it both collectible for its rarity and interesting for its potential taxonomic implications.