Snake mites: detecting and eliminating the terrarium's parasites
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
The snake mite, Ophionyssus natricis, is the most common external parasite in reptile keeping. This tiny black mite feeds on its host's blood, causing itching, weakening and anaemia in heavy infestations; it is best known for its role as a vector, able to transmit pathogens from one reptile to another. An ignored infestation can threaten the animal's life. Our other care pointers are in the reptile care and grooming section.
Contents · 4 sections
Recognising an infestation
Look for small black or dark-red dots moving over the snake's body, especially around the eyes, under the chin scales and in the folds of the neck. The snake soaks abnormally long to try to drown the parasites, rubs against the decor, and may show incomplete or difficult sheds. White specks (mite droppings) or a fine dust at the bottom of the water bowl are other clues.
Treating the animal and the terrarium together
Effective treatment relies on two fronts at once: the snake on one hand, the environment on the other, because mites spend much of their cycle in the terrarium, not on the host. Treating only the animal condemns you to reinfestation. Ask a specialist vet for a parasite treatment suited to reptiles: dog and cat products can be toxic. In parallel, empty the terrarium completely.
Disinfection and prevention
Remove all substrate, replace it temporarily with disposable paper towel (easier to monitor), and clean the decor and hides thoroughly. A clean humid hide helps with sheds disrupted by parasites: see our article on the humid hide. To prevent it, quarantine any new animal for several weeks in a separate tank, and keep the means to react fast through the reptile care section.
Frequently asked questions
Do snake mites bite humans?
They may occasionally land on skin but do not settle there: their host is the reptile. The main risk remains the contamination of other animals.
Where do they come from?
Most often from a new animal, or contaminated decor or substrate. Systematic quarantine is the best barrier.
Is a single treatment enough?
Rarely: you generally need to repeat the treatment to reach the mites hatched from eggs after the first application.
An accessory from our shop for this use: Stick-on digital thermometer for aquarium and terrarium glass (€18.90) · the whole shop
This guide is part of Planète Pets’s Reptiles universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
