Ultra Grade Maxima Clam
The Maxima Clam, also known as the Small Giant Clam, is one of the most recognized species of giant clams. Its vibrant mantle features a rich variety of patterns and vivid colorations, creating a stunning visual display in reef aquariums with proper lighting.
Maxima Clams are naturally social and often live in large groups in the wild, where they can grow up to 12 inches in size. Most Tridacna maxima available in the aquarium trade are cultivated on land-based farms in the Central and South Pacific.
Grading Criteria
| Grade | Size | Color Intensity | Pattern Complexity |
|---|---|---|---|
| Ultra Grade | Minimum 6 inches | High | High |
FAQ
What makes Ultra Grade Maxima Clams different from other grades?
Ultra Grade Maxima Clams are selected for their large size, intense coloration, and complex patterns. They meet strict standards for size, color intensity, and pattern intricacy, making them ideal for visually striking reef displays.
Are these clams suitable for beginner reef aquariums?
Maxima Clams require stable water conditions and proper lighting to thrive. They are better suited for experienced reef keepers who can maintain consistent water parameters and provide adequate lighting.
How long do Maxima Clams typically live in captivity?
With proper care, Maxima Clams can live for many years in captivity, often exceeding 10 years.

Joan Lewis –
The Ultra Grade Maxima Clam arrived in excellent condition. Its color and pattern are vibrant and stand out in my reef tank. It has been thriving for over six months with no issues. The lighting setup I have is sufficient for its display.
Sam King –
Beautiful clam with a rich, deep color. It’s not the largest, but the pattern is very detailed and eye-catching. I’ve had it for three months and it’s doing well in my 120-gallon tank.
Natalie Lee –
Highly satisfied with the quality. The clam is larger than expected and shows strong coloration. It’s a centerpiece in my tank and adds a lot of visual interest.
Amelia Gibson –
The clam is nice, but I noticed it’s not as active as I expected. It’s settled in well, but the color hasn’t fully developed yet. I’ll monitor it over the next few months.