Iconaster longimanus is a visually captivating starfish known for its elongated arms and distinctive patterning. This species adds an intriguing natural element to mature reef or marine aquariums.
Care Level: Moderate care is recommended, as Iconaster longimanus requires stable water parameters and regular feeding.
Feeding: This starfish is a detritivore and scavenger, feeding primarily on small organic particles, microalgae, and leftover food. Supplement its diet with finely chopped meaty foods such as mysis shrimp or specialised invertebrate pellets to ensure optimal health.
Compatibility & Reef Safety: Iconaster longimanus is generally peaceful and reef safe, making it suitable for community reef tanks. However, avoid housing with aggressive fish or invertebrates that may harm or outcompete it.
Tank Requirements: A minimum tank size of 75 litres is advised to provide sufficient space and stable water quality. Maintain moderate water flow to mimic natural conditions without causing stress.
Placement: Position the starfish on live rock or sandy substrate where it can forage comfortably. Ensure the aquarium is well-established with mature biological filtration.
Water Parameters: Maintain temperature between 24-27°C, salinity at 1.023-1.025 SG, and stable pH around 8.1-8.4.
Iconaster longimanus is an excellent choice for hobbyists seeking a distinctive and manageable starfish to enhance their marine aquarium.



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