Can Praying Mantises Live Together?

Usually no. Most praying mantises do best when housed individually because cannibalism is common. Newly hatched or very young nymphs may sometimes be kept together for a limited time, and a few species such as ghost mantises are often considered more group-tolerant, but cohabitation still carries real risk.

If you choose to try communal housing, success depends on species, enclosure size, equal body size, frequent feeding, many perches, and close monitoring. Even with careful setup, one molt, one missed meal, or one size difference can turn a shared enclosure into a dangerous one.

Mantises are predators first. They react to movement, and another mantis can look like prey, a rival, or both. Hunger increases that risk, but hunger is not the only trigger. Stress, crowding, poor line-of-sight breaks, and size differences also matter.

Molting is another major reason to avoid cohabitation. A mantis that is hanging to shed its exoskeleton is soft, vulnerable, and unable to defend itself. A cage mate may injure or eat it during or shortly after the molt. This is one of the biggest practical reasons experienced keepers separate mantises as they mature.

Some keepers report better results with species considered relatively calm or "communal," especially ghost mantises. Young nymphs of some species may also be kept together briefly if they are the same age and have abundant food. Still, "more tolerant" does not mean "safe together."

If a species is marketed as communal, treat that as a possibility rather than a guarantee. Individual temperament, sex, instar, feeding schedule, and enclosure design can all change the outcome. For most pet parents, separate enclosures remain the lower-risk choice.

Separate them immediately if you see stalking, grabbing, food guarding, repeated face-to-face posturing, one mantis hanging near another during a molt, missing legs, damaged wings, or unexplained disappearances. A size gap is also a warning sign, because the larger mantis may begin treating the smaller one as prey.

You should also separate mantises if feeding has become hard to control. In a shared enclosure, one mantis may eat more while another slowly weakens. That can create a cycle where the stronger mantis becomes even more likely to attack.

If you decide to house compatible young mantises together, use a large, well-ventilated enclosure with many vertical climbing surfaces and visual barriers such as branches or plants. Keep only similarly sized individuals together. Offer prey often enough that no mantis is left hunting cage mates, and remove leftovers that may disturb a molting mantis.

Have backup enclosures ready before problems start. Small deli cups, mesh enclosures, or individual terrariums are commonly used and usually cost about $5 to $30 each, depending on size and materials. Feeder insects often add about $5 to $20 per week for a small collection, and replacing injured mantises or emergency supplies can raise the total cost range.

Your vet can help if a mantis has visible trauma, is unable to grip, has a bent body after a molt, stops eating after an injury, or develops dark, damaged tissue. Invertebrate care is not available at every clinic, so call ahead and ask whether your vet sees exotic invertebrates.

A basic exotic or invertebrate consultation in the United States often falls around $60 to $150, with higher cost ranges for urgent visits, diagnostics, or supportive care. Because treatment options for severe injury can be limited, the most effective approach is still prevention through species-appropriate housing.