How long do mantises live
Most pet mantises live 6–12 months from hatch to death. They are short-lived by nature. Risks are dehydration (they need misting), starvation (refusal before a molt), and injury from prey that fights back (feed appropriate-sized, soft-bodied insects). A well-misted, properly fed mantis completes its full life cycle.
Enclosure: airy and vertical
Use a tall, well-ventilated mesh or glass terrarium (at least 3× the mantis's length in height). Provide perches (twigs, fake plants). Substrate is optional; paper towel eases cleaning. Escape-proof — mantises are experts at gaps. Good airflow prevents mold and respiratory issues; avoid sealed, stuffy boxes.
Humidity and the molt
Mist daily so the mantis can drink droplets; humidity 60–70% suits most species. The make-or-break event is the molt — they hang upside down and shed; NEVER disturb them, and ensure space to fully extend. A failed molt (often from low humidity) causes lost or deformed limbs. After molt, wait 2–3 days before feeding.
Diet: live and sized right
Feed live flightless fruit flies (nymphs), small crickets, or houseflies sized to the mantis — prey should be no bigger than the mantis's abdomen. Feed every 1–3 days for youngsters, every few days for adults. Remove uneaten prey. Never handle roughly; a mantis may latch but cannot seriously hurt you. Observe and enjoy the hunt.
Beginner mistakes to avoid
- Low humidity — failed, fatal molt.
- Oversized prey — can injure the mantis.
- Disturbing a molt — deformity or death.
- Sealed stuffy enclosure — mold and death.