Hammer Coral (Euphyllia ancora) appraisal

An LPS (large polyp stony coral) distinguished by long tentacles that spread hammer-shaped (T-shaped) at the tips. The abundant color variations and graceful movement of the tentacles are popular, and the species can be maintained long-term in appropriate aquarium conditions.

解説用イラスト: Hammer Coral (Euphyllia ancora) — AI-generated illustration for explanation. Not an actual listed individual.

What determines the price

Tentacle extension and hammer head expansion
High
The more the tentacles extend fully and the hammer sections spread at the tips, the better the health status. If tentacles remain retracted persistently, there may be an underlying issue.
Tentacle coloration and fluorescence
High
Tentacle color (green, gold, tan, purple, etc.) and the intensity of fluorescence determine the display value.
Skeleton (calix) condition
Medium
The absence of damage or chips in the calcified skeleton is the foundation for stable maintenance.
Head count (branching type)
Medium
In branching-type corals, a higher head count indicates greater colony fullness.

Appraisal points

Verify tentacle extension

Good:: Tentacles extend firmly with the hammer sections spreading and swaying gently.
Caution:: If tentacles remain completely retracted persistently, this may be a sign of environmental stress or illness.

Check tentacle coloration

Good:: Uniform coloration throughout the tentacles with vivid fluorescent color.
Caution:: If some tentacles have lost color or are bleached, a status check is necessary.

Check the condition of the skeletal structure.

Good:: The skeletal structure is white and clear, maintaining a well-formed shape.
Caution:: When the skeletal structure has damage or chips, tissue recovery may not keep pace.