Black Brittle Star

The Black Brittle Star (Ophiocoma echinata) is a fascinating echinoderm known for its distinctive appearance and beneficial role in marine aquariums. Its unique morphology and scavenging behavior make it a valuable addition to well-maintained reef systems.

Essential Information

• Common Names: Black Brittle Star, Banded Brittle Star
• Scientific Name: Ophiocoma echinata
• Family: Ophiocomidae
• Origin/Habitat: Found in the Atlantic Ocean, particularly in the Caribbean Sea, inhabiting coral reefs and rocky substrates.
• Maximum Size: Arm span can reach up to 12 inches (30 cm).
• Lifespan: With proper care, they can live several years in captivity.
• Level of Difficulty: Easy; suitable for both novice and experienced aquarists.
• Reef Safe: Yes; generally considered reef safe and beneficial as a scavenger.

Appearance & Physical Traits

• Coloration & Pattern: Typically exhibits a dark brown to black coloration, sometimes with banded patterns on the arms.
• Body Shape & Structure: Features a small central disc with long, slender arms covered in tiny spines, giving a brittle appearance.

Habitat & Environmental Needs

• Minimum Tank Size: A well-established aquarium of at least 20 gallons (75 liters) is recommended to provide adequate space and stable water conditions.
• Water Temperature: Maintain between 72°F and 78°F (22°C to 26°C).
• pH Level: Keep between 8.1 and 8.4.
• Specific Gravity: Optimal range is 1.023 to 1.025.
• Aquascape: Provide ample live rock and a sandy substrate to offer hiding spots and foraging areas.

Diet & Feeding

• Diet Type: Omnivorous scavenger.
• Preferred Foods: Feeds on detritus, uneaten food, and small organisms. May also accept small pieces of shrimp, fish, or commercial invertebrate foods.
• Feeding Frequency: Typically does not require direct feeding in a well-established aquarium but can be fed occasionally to supplement its diet.

Behavior & Compatibility

• Temperament: Generally peaceful and reclusive; spends much of the day hiding and becomes more active at night.
• Social Behavior: Non-aggressive towards other tank inhabitants.
• Tank Mate Compatibility: Compatible with a wide range of reef-safe fish and invertebrates. Avoid housing with aggressive predators that may prey on brittle stars.
• Activity Level: Nocturnal; primarily active during nighttime hours.

Care Considerations & Additional Notes

• Ease of Care: Easy; thrives in stable, mature reef aquariums with appropriate hiding spots and a natural food supply.
• Special Requirements: Sensitive to rapid changes in water parameters and copper-based medications. Ensure stable water conditions and avoid exposure to harmful substances.
• Breeding Info: Breeding in captivity is rare and not well-documented.
• Additional Notes: While generally reef safe, it's essential to monitor their behavior, as some individuals may prey on small, delicate tank mates if underfed.