How Often Should You Feed a Praying Mantis?

A simple starting schedule works well for most pet parents. Newly hatched mantises and very small nymphs usually need tiny prey such as flightless fruit flies within 1 to 2 days after hatching. Early instars are often fed daily to every other day, depending on how much they eat and how quickly prey disappears.

For mid-stage juveniles, feeding every 1 to 3 days is common. At this stage, many mantises can handle houseflies, small roaches, or small crickets. Adults usually continue on an every-1-to-3-day rhythm, though larger females may eat more than males. If you offer a larger prey item, the next meal may need to wait a bit longer.

Praying mantises are carnivorous ambush predators. Nymphs and adults eat live insects they can catch, including fruit flies, houseflies, roaches, small crickets, gnats, and other soft-bodied feeder insects. University extension sources note that both nymphs and adults are active predators and will eat a wide range of insects.

Choose prey that matches your mantis's size and molt stage. Very small mantises can be injured by prey that is too large or too strong. Some educational care sheets specifically warn against offering large prey too early because it can harm or kill a small mantis.

A hungry mantis may become more active, track movement closely, strike quickly at prey, or show a slimmer abdomen than usual. In group housing, hunger can also increase cannibalism risk, especially in hatchlings and young nymphs.

If your mantis consistently finishes prey right away and remains actively hunting, it may need slightly more frequent meals or a slightly larger feeder insect. Make changes gradually. Overfeeding can be as unhelpful as underfeeding, especially if prey is left in the enclosure too long.

Many mantises eat less or stop eating before a molt. This is often normal and should not be forced. Instead, focus on safe enclosure conditions, good ventilation, and appropriate humidity for the species. Remove uneaten prey so it does not disturb or injure the mantis during the molt.

A short fast can also happen after a large meal. What matters most is the full picture: posture, hydration, successful molts, and overall activity. If your mantis refuses food for an extended period, looks weak, or has trouble molting, your vet can help you sort out husbandry versus health concerns.

Offer only live prey of appropriate size, and avoid leaving aggressive feeders in the enclosure unattended. Educational mantis care sheets recommend fruit flies for young nymphs, then larger prey only after several molts. One guide notes waiting until after the fifth molt for cricket nymphs and after the seventh molt for adult crickets.

Mist or provide water safely according to your species' needs, because dehydration can look like poor appetite. Feed in a clean enclosure, remove leftovers, and keep records of molts and meals. That makes it easier to notice patterns and ask your vet better questions if something changes.