Star Polyp (Briareum sp.) appraisal

A soft coral with small green polyps that spread to cover rock surfaces. Prized as an entry-level species for saltwater aquariums due to rapid growth and ease of care, but its high reproductive capacity requires management to prevent overgrowth into adjacent corals.

解説用イラスト: Star Polyp (Briareum sp.) — AI-generated illustration for explanation. Not an actual listed individual.

What determines the price

Polyp density and uniform spread.
High
Higher polyp density and more uniform spread across the entire colony indicate a robust, well-developed colony.
Vibrancy of body coloration (fluorescent green, etc.).
High
Vivid green coloration (whether fluorescent or not) is a primary indicator of body color quality. Absence of dullness or browning indicates better condition.
Base mat attachment condition.
Medium
The spread of the base mat forming the colony and its attachment stability to the rock surface indicate overall stability.
Polyp extension.
Medium
Whether polyps extend evenly when water flow is present is a key indicator of health.

Appraisal points

Check polyp opening.

Good:: Polyps are uniformly expanded throughout and gently sway with water flow.
Caution:: If polyps fail to open or remain retracted, environmental or health issues may be present.

Check body color and browning.

Good:: Vivid green coloration (or the specimen's species-typical color) is uniform, with no browning visible.
Caution:: Specimens with prominent browning may have excessive zooxanthellae or be under stress.

Verify the mat attachment status

Good:: The mat is evenly attached to the rockwork with no peeling.
Caution:: If the mat is partially peeling, check handling practices and water quality.