The Madagascan hissing cockroach (Gromphadorhina portentosa) is a large, wingless insect native to the forest floors of Madagascar. Known for its distinctive hissing sound—produced by forcing air through tiny openings called spiracles—this species uses its vocalizations for communication, mating, and defense. Unlike many cockroaches, it plays a vital ecological role as a decomposer, breaking down decaying plant material and recycling nutrients into the soil. Its hardy nature and docile temperament have also made it a popular species in educational programs and as a pet, helping to challenge misconceptions about cockroaches.
Madagascan Hissing Cockroach (Gromphadorhina portentosa)
Size: Small Nymphs & Adults available
Status: Captive Bred
Range: Madagascar
Temperature 22-30 C Humidity 60-70% Diet Fruit, Veg, Dog or Cat Biscuit, Leaf Litter Enclosure Semi-Arboreal
Large escape proof enclosure (use Vasoline
around the tops and doors to prevent escape).
Species can climb glass and plastic. Lots of
climbing and hiding spaces. Soil substrate.


Reviews
Despite an issue with the royal mail, the cockroach is very healthy and adapting well to it's new environment. It also likes the dry leaf litter and bran I ordered from here. Overall, an excellent seller, would highly recommend :).
First time buying from Graeme, overall a very positive first experience. Ordered three male Hissers, dispatched quickly and arrived in secure packaging, all happy and healthy. Will definitely be buying from here in the future!
This was my second order from Graeme and I couldn't be happier. I purchased two adult hissing cockroachs and when they arrived I was absolutely blown away how big and healthy they are. Graeme has to be your one stop shop for everything insect related ⭐⭐⭐⭐⭐
Small nymphs at a great price. Quality packaging as usual.