You just found a praying mantis on your window screen, spotted one at a reptile expo, or saw a photo online and now you need to know: can you actually keep one? The answer for most people is yes. Mantises are alert, patient hunters, surprisingly calm in the hand, and genuinely inexpensive to house. They’re also fragile in ways that a quick internet search rarely warns you about.
This guide covers which species to start with, what a correct enclosure looks like, how feeding and molting work, and what to do right now if you found a wild mantis. By the time you finish you’ll have a species choice, a setup plan, and a realistic sense of what daily care looks like.
Key Takeaways
- The African mantis (Sphodromantis viridis) is the best beginner species: hardy, handleable, widely available, and forgiving of beginner mistakes.
- Enclosure height matters more than floor space. A mantis needs vertical space to hang and molt.
- Feed every 2 to 4 days with live prey sized at one-third to one-half the mantis’s body length.
- Never house two mantises together. They are cannibalistic and will eat each other.
- Most beginner mistakes happen at molting: disturbing the mantis, feeding within 5 days of a molt, or providing an enclosure without room to hang.
Which Praying Mantis Species Should a Beginner Get?
There are over 2,400 mantis species. For beginners, the choice should come down to hardiness, handleability, and availability. Here are the three species you’ll most commonly encounter and what they’re actually like to keep.
African Mantis (Sphodromantis viridis) — Best for Beginners
The African mantis is the go-to recommendation from experienced keepers and for good reason. It’s a large, bright green species that reaches 6 to 7 cm, tolerates temperature and humidity variation, eats readily from the first instar, and stays calm during handling once it’s past a few molts. Nymphs are available from $5 to $15.
Care basics: 75 to 85 °F, 40 to 60 percent humidity, no misting required beyond a twice-weekly light spray on one enclosure wall. Full care details are at the Sphodromantis viridis care guide.
Chinese Mantis (Tenodera sinensis)
The Chinese mantis is the large green-and-brown species commonly found in North American gardens and sold as egg cases at garden centers. Adults reach 8 to 10 cm, making them one of the largest mantis species in the hobby. They’re robust and eat well but are less tolerant of handling than Sphodromantis and become defensive as adults.
Good choice if you found one wild or want a large display species. Care guide: Tenodera sinensis care.
Orchid Mantis (Hymenopus coronatus)
The orchid mantis is the species in every viral photo. It looks like a pink-white flower petal. It is also the most demanding species on this list: specific humidity requirements, fast growth through many instars, and less forgiving of feeding errors than either of the above.
Do not start with an orchid mantis unless you’re prepared to research it extensively separately. Care guide: orchid mantis care.
Featured Snippet: Praying Mantis Care in Brief
Praying mantises need an enclosure 3x their body length tall with cross-ventilation, temperatures of 75 to 85 °F, feeding every 2 to 4 days with live insects sized at one-third body length, and a horizontal branch or mesh lid to hang from during molts. Never house two mantises together. Never feed within 5 days of a molt.
Praying Mantis Enclosure Setup
Size and Shape: Why Height Matters
The most important dimension for a mantis enclosure is height, not floor area. A mantis hangs upside down from the ceiling of its enclosure during a molt. If the enclosure isn’t tall enough, the animal’s legs hit the substrate while it’s still pulling free of the old exoskeleton, causing deformity or death.
Rule of thumb: the enclosure should be at least 3 times your mantis’s body length tall and 2 times its body length wide. For a 6 cm adult Sphodromantis, that means at least 18 cm (7 inches) of interior height.
For nymphs, smaller is often better. A large enclosure makes it harder for small nymphs to find prey, which causes them to starve even when prey is present.
Enclosure progression for a single mantis:
- Instars L1 to L3: deli cup with ventilation holes, 8 to 10 cm tall
- Instars L4 to L6: 16-ounce (500 ml) container, 15 cm tall
- Instars L6 to adult: 30 cm x 20 cm x 30 cm (H) glass or acrylic cage
For recommended enclosures at each size, see the best mantis enclosures gear review.
Ventilation
Mantises need cross-ventilation: airflow from one side to another, not just a hole in the lid. Stagnant, humid air promotes bacterial and fungal growth and can kill a mantis within days. Mesh panels on opposite walls (or top and side) are the standard solution.
Screen cages work well for species from drier environments (Sphodromantis, Chinese mantis). Glass enclosures with ventilation panels work better for species needing higher humidity (orchid mantis, ghost mantis).
Substrate and Furnishings
The substrate is not the priority it is with isopods, but 1 to 2 inches of coconut coir or organic topsoil at the bottom helps maintain ambient humidity and looks natural.
What matters more:
- A horizontal perch (a cork bark branch, bamboo skewer, or actual twig) positioned across the upper third of the enclosure. Mantises spend most of their time here.
- Mesh or textured ceiling: mantises grip the ceiling to hang for molting. Smooth acrylic ceilings are a molt hazard. Add a piece of mesh hot-glued inside the lid if your enclosure ceiling is smooth.
- Fake or live foliage: adds visual complexity and gives the mantis more surfaces to move between while hunting.
Temperature and Humidity
Most beginner species do well at 75 to 85 °F. A 60-watt incandescent bulb or low-wattage heat lamp over the enclosure creates a gentle warm zone without overheating. Avoid basking spots above 95 °F.
Humidity requirements vary significantly by species:
| Species | Humidity | Misting |
|---|---|---|
| African mantis (S. viridis) | 40 to 60% | Twice weekly, one wall only |
| Chinese mantis (T. sinensis) | 40 to 60% | Twice weekly |
| Orchid mantis (H. coronatus) | 60 to 80% | Daily, not drenching |
| Ghost mantis (Phyllocrania paradoxa) | 40 to 60% | Twice weekly |
Never mist directly onto the mantis. Spray one side of the enclosure wall and let it evaporate. This doubles as the mantis’s water source (they drink water droplets off surfaces, rarely from a dish).
Feeding Your Praying Mantis
Mantises are obligate live prey feeders. They do not eat dead insects. Their hunting instinct is triggered by movement, and a dead cricket sitting on the substrate will be ignored.
Prey Size Rule
Prey should be one-third to one-half the mantis’s body length. Prey that’s too large can injure the mantis, especially nymphs. Prey that’s too small gets ignored or wastes energy.
Prey Options by Mantis Size
Small nymphs (L1 to L3): fruit flies (Drosophila melanogaster or D. hydei). These are the only prey small enough for early instars. Culture your own or buy them in batches. A guide to setting up cultures is at fruit fly culture setup.
Medium nymphs (L3 to L5): small crickets, small waxworms, blue bottle fly pupae, small dubia roaches.
Large nymphs and adults: medium crickets, medium-large dubia roaches, hornworms, large blue bottle flies, moths.
Variety improves nutrition. A mantis fed exclusively crickets its whole life survives but doesn’t thrive the way one fed a rotating mix of prey types does.
Feeding Frequency
Feed every 2 to 4 days. A mantis that has just eaten (abdomen visibly full and rounded) doesn’t need feeding again for at least 48 hours. Overfeeding large prey creates digestive problems and sometimes injures animals.
Signs of underfeeding: the abdomen appears thin and concave. Sustained underfeeding stresses the animal and can cause molt complications.
See the mantis feeding guide for detailed prey schedules by instar.
The 5-Day Rule Around Molts
Do not feed your mantis for 5 days before a molt and 5 days after. The “before” rule is tricky because you don’t always know a molt is coming. Learn to recognize pre-molt signs (see below) and stop feeding when you see them.
After a molt, the mantis’s new exoskeleton needs 5 days to harden before it can safely grip prey. Feeding too early results in the prey injuring the mantis.
Molting: The Most Critical Part of Mantis Care
Molts are the most dangerous time in a mantis’s life. Every single molt is a potential point of failure, and most beginner losses happen here.
How Many Times Do Mantises Molt?
The number of instars (stages between molts) varies by species and sex. Female mantises molt more times than males because they grow larger. A female African mantis may go through 9 to 10 molts before reaching adulthood. Males go through 7 to 8.
The time between molts also lengthens as the mantis grows. Early instars molt every 2 to 3 weeks. Later instars may take 4 to 6 weeks between molts.
Pre-Molt Signs
- Refusing food for 2 to 5 days
- Hanging from the ceiling or branch for extended periods without moving
- Abdomen appears lighter or more opaque than usual
- Less responsive to prey
When you see these signs: remove any uneaten prey from the enclosure immediately. Do not mist for 48 hours. Leave the mantis completely alone.
During and After the Molt
The mantis hangs upside down and pulls itself free of the old exoskeleton over 15 to 30 minutes. Do not disturb it, do not pick it up, do not add water. Interrupting this process causes deformity.
After the molt, the mantis hangs for another 2 to 4 hours while the new exoskeleton hardens and straightens. Wings (if present after the final molt) unfurl during this period. Leave it alone during this phase too.
Wait 24 hours before gently offering water (a small droplet on the enclosure wall). Wait 5 days before offering prey.
Detailed molt-by-molt guidance is in the mantis molting guide.
Handling Your Praying Mantis
Mantises are among the most handleable invertebrates. They don’t sting, don’t have urticating hairs, and most species don’t bite unless mishandled (and even then the bite of common beginner species is minor).
How to Pick Up a Mantis
Approach slowly from the front. Move your hand below the mantis and let it step up of its own accord rather than grabbing it from above. An approach from above triggers a defensive posture (wings spread, swaying) because it mimics a predator strike.
Once on your hand, move slowly. Mantises track movement with their head and will watch you with visible attention. This is one of the genuinely delightful things about them.
Frequency
Handle adults and older nymphs (L5+) if the mantis is calm and feeding well. Avoid handling within a week of a molt. Early instars should not be handled because they’re too small and fragile.
A stressed mantis sways side to side or spreads its wings in a deimatic display. Put it back and try another day.
Lifespan and Sexing
Lifespan
Adult mantis lifespan is short after the final molt. Males typically live 2 to 3 months as adults. Females live 4 to 6 months. The full lifespan from egg to death for most common species is about 12 to 18 months.
This is one of the hardest things to absorb for new keepers. You will get attached, and the animal has a shorter life than a cat or a dog, or even a spider. Many keepers breed their adults specifically because it extends their engagement with the hobby and means the lineage continues.
How to Tell Males from Females
The easiest method: count the abdominal segments visible from below. Males have 8 visible segments, females have 6. This works from L3 onward. Female adults are noticeably larger and broader in the abdomen. Male adults are slimmer and develop longer wings proportionally.
What to Do If You Found a Wild Mantis
Wild mantises are most commonly found in North America as Tenodera sinensis (Chinese mantis, introduced) or Stagmomantis carolina (Carolina mantis, native). Both are legal to keep in almost all US states, though check your local regulations.
Immediate steps:
- Place the mantis in a ventilated container with a twig to perch on.
- Offer a medium cricket or fruit fly (depending on mantis size) within 6 hours.
- Check for injury: legs that don’t close fully, wings hanging unevenly, or difficulty gripping.
- Identify the sex and approximate instar (how large is it relative to the adult size of the species?).
Wild-caught mantises often have parasites, most commonly Gordian worms (horsehair worms) that emerge from the abdomen. This is distressing to witness but is not a risk to humans. The mantis will not survive if the worm has completed its development. This is not something you caused.
Common Beginner Mistakes
Enclosure too short: the most common fatal error. The mantis cannot hang correctly for molting and dies in the exoskeleton.
Feeding during pre-molt or too soon after: prey injures the vulnerable animal. Follow the 5-day rule.
Housing two mantises together: they will cannibalize each other. Even females of nominally “social” species will eat enclosure-mates under captive conditions. One mantis per enclosure, always.
Misting too heavily: wet, stagnant air causes respiratory problems and mold. Mist one wall lightly, let it evaporate, don’t flood the enclosure.
Prey too large: adult crickets or large roaches can injure nymphs. Size prey at one-third to one-half the mantis’s body length.
Smooth enclosure ceiling: mantises need a textured or mesh ceiling to grip for molting. Smooth plastic is a molt trap.
If you’re setting up for a first mantis, the invertebrate pets for beginners guide gives a broader comparison of beginner species and what realistic commitment looks like.
Breeding and Egg Cases
Breeding mantises is a rewarding next step once you’re comfortable with single-animal care. The female produces an ootheca (egg case) after mating, and each ootheca can contain 30 to 300 eggs depending on species.
Breeding requires introducing a male to a female’s enclosure carefully, ensuring the female is well-fed beforehand to reduce cannibalism risk, and maintaining appropriate temperature and humidity during ootheca incubation.
Full details are in the praying mantis oothecae care guide.
Frequently Asked Questions
How long do praying mantises live as pets? Most beginner species live 12 to 18 months total. Adults survive only 2 to 6 months after the final molt: males die sooner, females live longer. This is short compared to other pet invertebrates, but the daily interaction with a mantis is unusually engaging for the time you have.
Do praying mantises bite? They have mandibles that can pinch if they mistake a finger for prey (usually during feeding). For most common beginner species, the bite is minor and feels like a small pinch. Approach from the front and move slowly to avoid triggering a defensive response.
Can I feed my mantis dead insects? No. Mantises hunt by movement. Dead prey is ignored. The only exception is if you use forceps to wiggle a recently dead insect in front of the mantis, which sometimes works for sick or very small animals, but it’s not reliable.
What size enclosure does a praying mantis need? At least 3 times the mantis’s body length in height, 2 times in width. For a 6 cm adult, that’s a minimum of 18 cm tall and 12 cm wide. Taller is always safer for molting.
Do praying mantises need companions? No, and you should not house them together. Mantises are solitary ambush predators and will cannibalize enclosure-mates regardless of sex or size.
Can you keep a mantis found outside? Yes, in most US states. House it in a ventilated container, identify the species and approximate age, and feed it appropriately sized live prey. Check for parasites in the first week. A wild-caught mantis may settle well into captivity or may be too close to the end of its lifespan to thrive long-term.