Tridacna maxima (Tear Drop) (13cm)

Tridacna maxima, commonly known as the Tear Drop clam, is a visually striking giant clam species prized in the marine aquarium hobby for its vibrant mantle colours and manageable size. This 13cm specimen is suitable for mature reef tanks and offers a captivating display with its iridescent patterns.

Care Level: Moderate – requires stable water parameters and appropriate lighting.

Feeding: Primarily photosynthetic, relying on symbiotic zooxanthellae within its tissues. Supplementary feeding with phytoplankton or specialised clam foods can enhance health and growth.

Lighting Requirements: High-intensity lighting is essential to support photosynthesis. Metal halide, T5, or high-output LED lighting systems are recommended.

Water Flow: Moderate, indirect water flow is ideal to prevent mantle damage while ensuring nutrient exchange.

Placement: Position on a stable, well-lit substrate or rockwork where the clam can receive ample light without risk of falling or being shaded by corals.

Compatibility: Reef safe with caution. Generally compatible with most reef inhabitants but avoid aggressive fish or invertebrates that may nip at the mantle.

Tank Size: Minimum 150 litres (40 gallons) recommended to maintain stable water conditions.

Origin: Indo-Pacific region.

Maximum Size: Up to 20cm in captivity, though growth rates vary.

Regular monitoring of water parameters, especially calcium, alkalinity, and magnesium, is important to support shell growth. Avoid sudden changes in lighting or water chemistry to reduce stress. This clam is a rewarding addition for aquarists seeking a blend of beauty and moderate care complexity.