Overview
Fimbriaphyllia ancora, the hammer coral, was recently moved from Euphyllia into Fimbriaphyllia along with the frogspawn coral, and you will still see it sold under its former name. It is one of the most popular large polyp stony corals in the hobby.
Colonies grow in either branching or wall-type forms, both covered in fleshy tentacles that move gently in the current.
Appearance and colour
Each tentacle ends in a distinctive hammer or anchor-shaped tip. Common colourations include green, gold and purple, with tips in contrasting cream, yellow or bright green.
Care in the aquarium
Hammer corals prefer moderate light and moderate, alternating flow. They accept small meaty foods, though healthy colonies do well without heavy feeding. They are generally less aggressive than torch corals and can often sit near other Fimbriaphyllia, but keep them clear of unrelated species.

