Description
The Giant Sailfin Dragon (Hydrosaurus microlophus) is a robust, semi-aquatic lizard known for its impressive dorsal crest and striking appearance. This is a solid choice for intermediate to advanced keepers ready for a larger, active reptile. Since we started carrying it in January 2026, it has become a consistent reorder due to its popularity. Our staff notes we sell more of these on weekends, often as a range day purchase.
Stand-Out Features
- Impressive Size & Display: Develops a large, sail-like dorsal crest and a prominent nuchal crest, creating a dramatic prehistoric profile.
- Semi-Aquatic Adaptability: Excellent swimmer; requires a spacious enclosure with a large water feature for swimming and soaking.
- Active & Observant: Diurnal and highly alert, providing engaging viewing opportunities as they patrol their territory.
- Distinctive Coloration: Exhibits a base of grays and browns, often with subtle green or blue hues, especially in males.
- Hardy Constitution: When provided with correct husbandry—high heat, UVB, and humidity—they are a resilient species.
Technical Data
| Scientific Name | Hydrosaurus microlophus |
| Common Name | Giant Sailfin Dragon |
| Adult Size | 3 – 4 feet (including tail) |
| Primary Habitat | Riparian forests of Indonesia |
| Temperament | Typically wary, can be skittish; handling requires patience |
| Diet | Omnivorous (leafy greens, vegetables, fruits, insects) |
| Weight (measured) | 5.8 oz (average for juveniles/sub-adults) |
| Lifespan Potential | 15+ years with proper care |
Your Questions Answered
What size enclosure does a Giant Sailfin Dragon need?
Adults require 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. Vertical space for climbing and robust basking sites are essential.
How is their temperament for handling?
They are not typically a “handleable” pet lizard. They are fast, powerful, and often nervous. Taming requires consistent, non-threatening interaction over a long period. They are best appreciated as display animals.
What are the key husbandry requirements?
Critical needs are high basking temperatures (115-120°F), strong UVB lighting across 2/3 of the enclosure, and high humidity (70-80%). A varied diet of appropriate greens, vegetables, and insects like dubia roaches or crickets is required.
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