Halloween Hissers (Gromphadorhina portentosa)

Halloween Hissers (Gromphadorhina portentosa)

Halloween Hissers are a boldly patterned morph of the classic Madagascar hissing cockroach, bred for their vivid orange striping and deep black contrast. Native to Madagascar, this species is known for its large size, docile temperament, and distinctive hissing sound — produced by forcing air through specialized abdominal spiracles. Their festive coloration and ease of care make them a standout choice for display, education, or bioactive vivariums.

Care Information
• Requires moderate humidity (60–70%) with occasional misting and dry zones for balance
• Prefers a warm enclosure with substrate such as coconut fiber or aspen shavings, along with bark and egg cartons for cover
• Feeds on a varied diet of fruits, vegetables, leaf litter, and protein sources like fish food, dog kibble, or roach chow
• Thrives in temperatures between 75–85°F (24–29°C)
• Grows up to 3 inches (7.5 cm) as adults
• Benefits from a vertical climbing surface and secure enclosure, as they can scale glass and plastic

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Note: While non-aggressive, Halloween Hissers may hiss when disturbed. Regular handling can reduce skittishness. Keep enclosure clean and well-ventilated to avoid mold or mite issues.