Description
The Moluccan Sailfin Dragon (Hydrosaurus amboinensis) is a large, semi-aquatic lizard for the intermediate to advanced keeper seeking a truly impressive display animal. Known for its dramatic dorsal crest and prehistoric appearance, it requires a specialized, spacious habitat. Since we started stocking this species in spring 2025, it has become one of our most consistent sellers in the large lizard category.
Stand-Out Features
- Impressive Size & Display: One of the largest agamid lizards, reaching up to 3-4 feet, with a commanding presence.
- Distinctive Sailfin: The prominent, serrated dorsal crest runs from the neck to the base of the tail, most pronounced in males.
- Semi-Aquatic Nature: A strong swimmer that requires a large water area for soaking and swimming as part of its enclosure.
- Robust & Hardy: When provided with correct husbandry—high heat, UVB, and humidity—these dragons are resilient and long-lived.
- Unique Coloration: Exhibits a base of grays and browns, often with subtle green or blue hues, especially when basking.
Technical Data
| Scientific Name | Hydrosaurus amboinensis |
| Common Name | Moluccan Sailfin Dragon |
| Adult Size | 3 – 4 feet (including tail) |
| Primary Habitat | Semi-aquatic; tropical forest riversides |
| Temperament | Typically wary, can be skittish; handling requires patience |
| Diet | Omnivorous: leafy greens, vegetables, fruits, insects, occasional pinky mice |
| Weight (measured) | 1.8 oz (on our scale for a juvenile) |
| Lifespan | 10+ years with proper care |
Your Questions Answered
What size enclosure does an adult need?
An adult requires a very large, custom enclosure, minimum 6’L x 3’W x 4’H. It must include a substantial water area deep enough for full submersion and swimming, along with sturdy branches for climbing and robust basking sites.
Are they handleable?
They are primarily display animals. While some individuals may tolerate brief, careful handling, they are naturally nervous and prone to sprinting or jumping. Taming requires significant, consistent effort. Their size and strength also make them a handful—literally.
What’s special about their care?
Their semi-aquatic need is paramount. You must maintain high humidity (70-80%) and provide a large, clean water source for daily soaking. They also require intense basking heat (115-120°F) and high-output UVB lighting across most of the enclosure to support their metabolism and bone health.
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This is a commitment animal. One of our staff noted a customer recently drove 3 hours to pick one up instead of waiting for shipping, which speaks to the dedication of keepers drawn to this species. Ensure you have the space, resources, and advanced knowledge before bringing one home.
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