Scorpions
Emperor Scorpion Care Guide: Tank, Humidity & Feeding
Shine an ultraviolet flashlight into a dark room at night and the emperor scorpion turns into a glowing ghost - a pale, electric blue-green under blacklight. It’s a party trick most keepers discover within the first week, and it hints at something about the species worth knowing: Pandinus imperator is built for the shadows. Everything about how it lives, hunts, and survives says “I would prefer you not notice me,” and that quiet temperament is exactly why it’s the most popular scorpion in the pet trade.

The emperor is one of the largest scorpion species in the world, reaching 6-8 inches (15-20 cm) as an adult, and it looks every bit as imposing as its name suggests. But appearances mislead. Given a choice between stinging and hiding, it will hide almost every time. Its venom is among the mildest of any large scorpion - typically compared to a bee sting - and it prefers to wave its heavy pincers rather than use its tail. That combination of size and calm demeanor makes it a reasonable first scorpion, provided you respect the one thing it genuinely cannot tolerate: dryness.
Before You Buy: Know the Legal Side
Emperor scorpions are wild-caught in significant numbers and are listed under CITES Appendix II, which regulates international trade. In the United States, that doesn’t require a permit for private hobbyists, but it does mean importation is tracked and reputable sellers carry documentation of legal origin. If a price looks too good to be true - or a seller can’t explain where the animal came from - walk away. Buy from a breeder or established shop that can show the paperwork, and skip any dealer moving emperor scorpions without it.
Enclosure Setup
A 10-gallon tank (or an equivalent 18x12x12 inch terrarium) comfortably houses one adult; a 20-gallon lets you keep a small group. The setup priorities are almost the opposite of a tarantula’s - scorpions need deep substrate, high humidity, and heat from the side rather than above.
- Substrate: 4-6 inches of coconut fiber or a coco/soil mix, kept slightly moist so it holds a burrow shape when squeezed. This depth is non-negotiable; a shallow layer is the most common reason emperor scorpions stay stressed on the surface.
- Hides: Cork bark flat, half a plant pot, or a piece of wood. One per scorpion if you’re housing a group.
- Water: A shallow dish topped up regularly, plus misting every couple of days. The substrate should stay damp but never soupy.
- Ventilation: A mesh or partially covered lid. Emperor scorpions need airflow, not a sealed swamp.
Temperature & Humidity
Emperor scorpions come from the humid rainforests of West Africa, and humidity is the single most important number in their care. Keep it 70-90% - measured with a hygrometer, not guessed. If humidity drops below 65% for days at a time, molts start failing and the scorpion’s abdomen can shrivel from dehydration.
Temperature runs 75-85°F (24-29°C) with a gradient. Mount a heat mat on the side wall - never under the tank, never the floor - and run it through a thermostat. A warm zone around 80-85°F gives the scorpion somewhere to heat up while a cooler corner around 72-75°F lets it retreat. Skip heat lamps entirely; they bake the humidity right out of the enclosure. Some keepers add a low-level UVB tube for natural day/night cycles, but it isn’t required.
Feeding
Adults eat once a week, sometimes every other. Crickets, dubia roaches, and mealworms all work; a single appropriately sized feeder per feeding is plenty. Drop the prey in near the scorpion or its burrow at dusk, and remove anything uneaten within 24 hours. A scorpion that hasn’t eaten in weeks may simply be in pre-molt - they fast before shedding just like tarantulas do. During an active molt, keep the humidity at the high end of the range and don’t dig up a molting scorpion under any circumstances.
Handling (Or, Realistically, Not)
Emperor scorpions can be gently moved with tongs or coaxed onto a paintbrush for cleaning, but this is not a species that enjoys being handled, and there’s no benefit to forcing it. The threat of a sting is real even if mild; the pincers, which they’ll gladly use first, can deliver a surprisingly painful pinch. Most keepers treat them as observe-only pets, and that’s the healthiest relationship for the animal. Spot-clean waste, keep the water dish fresh, and let it live its burrowing life mostly undisturbed.
Common Problems
- Dehydration: Shriveled abdomen, lethargy, refusal to leave the water dish. Fix: raise humidity, moisten substrate, mist daily.
- Failed or stuck molts: Almost always a humidity problem. Keep moisture at 80-90% and never disturb a molting scorpion.
- Mites: Cloudy, wet substrate breeds them. Spot-clean, add ventilation, and let the top layer dry slightly between mistings.
- Mold: Same root cause as mites - too much water and not enough airflow. Ease off the misting and increase ventilation.
If you’re building a bioactive setup and want a cleanup crew to go with your scorpion, the isopod comparison guide covers which species are safe around molting invertebrates. And if a calmer, drier pet sounds more your speed, the beginner tarantula care guide is the natural next read.
