Maxima Clam (Tridacna maxima)

The Maxima Clam (Tridacna maxima) is a freshwater invertebrate for planted and community aquariums. This profile covers habitat, diet, tank needs, and maxima clam care.

For related reading, see Java Moss for shrimp cover and Emerald Crab.

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Maxima Clam (Tridacna maxima). Photo: Diego Delso / Wikimedia Commons (CC BY-SA 4.0)

Native Habitat and Size

Associated with Indo-Pacific reefs. Adults reach 8–12 inches (20–30 cm) potential.

Tank Requirements

Minimum: 40 gallon+ stable reef with PAR. Mature biofilm, hiding places, and copper-free water are essential.

Diet

Feeding mode: photosynthetic + particulate food. Supplement scavenging with species-appropriate wafers, vegetables, or powdered foods in current for filter feeders.

Water Conditions

  • Temperature: 75–80°F (24–27°C)
  • pH: 8.1–8.4
  • Ammonia / nitrite: 0 ppm

Compatibility and Breeding

Keep with peaceful fish. Breeding difficulty: advanced. Provide cover for berried females or egg clutches.

Conclusion

Maxima Clam adds cleanup behavior and interest when water quality stays stable and tank mates remain gentle.