Gold Tip Branching Hammer

Gold Tip Branching Hammer, Euphyllia paraancora and related species (also currently classified as Fimbriaphyllia paraancora), is a fleshy reef-building coral prized for its large flowing polyps, branching skeletal growth, and distinctive hammer-shaped tentacle tips. This specimen displays muted rose to reddish-brown tentacles accented by bright fluorescent yellow-gold tips, creating strong contrast under reef aquarium lighting.

Branching hammer corals form separate tubular skeletal branches, with each branch supporting one or more fleshy polyps. Unlike wall-form hammer corals, which grow along continuous valleys, branching hammer corals develop distinct heads that can divide as the colony matures. This branching structure makes established colonies especially attractive because individual heads sway independently with water movement.

The Gold Tip coloration is especially striking under blue-rich reef lighting. The fleshy tentacles show subtle rose, mauve, and brown tones while the enlarged hammer-shaped tips fluoresce vivid yellow to gold. When fully expanded, the colony produces a soft, flowing appearance that adds movement as well as color to the aquarium.

Like other photosynthetic Euphyllia-type corals, branching hammer corals contain symbiotic photosynthetic dinoflagellates that provide much of their nutritional energy. The polyps are also capable of capturing small meaty and planktonic foods, and occasional targeted feeding may support growth and tissue condition.

These corals prefer low to moderate, indirect water movement. Flow should be strong enough to gently move the tentacles and prevent debris from settling around the colony, but a concentrated jet can cause tissue to remain retracted or rub against the underlying skeleton.

Stable reef aquarium chemistry is particularly important. Consistent alkalinity, calcium, magnesium, salinity, and temperature support healthy skeletal growth and tissue expansion. Sudden parameter swings can be stressful, especially rapid changes in alkalinity or salinity.

Branching hammer corals can be aggressive toward nearby corals and may extend sweeper tentacles beyond the visible daytime tissue. Adequate spacing should therefore be provided around the colony.

Because closely related branching hammer corals can be difficult to distinguish with certainty from appearance alone, Euphyllia paraancora and related species is the appropriate identification for this specimen rather than assigning an unsupported narrower designation.

Care Guide:

Scientific Identification: Euphyllia paraancora and related species; currently also classified as Fimbriaphyllia paraancora
Common Name: Branching Hammer Coral
Care Level: Moderate
Lighting: Low to Moderate
Water Flow: Low to Moderate, indirect and variable
Placement: Lower to middle areas of the aquarium depending on lighting intensity
Temperament: Aggressive; can extend sweeper tentacles and sting neighboring corals
Reef Compatibility: Reef safe with adequate spacing
Feeding: Primarily photosynthetic; may also benefit from occasional small meaty, planktonic, or coral-specific foods
Growth Form: Branching calcium carbonate skeleton with individual fleshy polyp heads
Water Parameters: Maintain stable reef aquarium temperature and salinity with consistent alkalinity, calcium, and magnesium. Maintain measurable and reasonably stable nitrate and phosphate levels.
Special Considerations: Provide several inches of clearance from neighboring corals. Avoid strong direct flow that whips the fleshy tentacles against the skeleton. Gradually acclimate the coral to stronger lighting. Handle carefully because the fleshy tissue can be damaged against sharp skeletal edges.