Cuban Cockroach Care Guide (Panchlora nivea)

The short answer: Cuban Cockroaches (Panchlora nivea) are easy to feed and easy to breed, and the only genuinely demanding part of keeping them is containment. Adults fly well and are small enough to slip through gaps you had not noticed. Give them a warm, humid tub with several centimetres of substrate, a tight-fitting lid with fine mesh over the ventilation, and feed them fruit, vegetables and a dry protein source. Nymphs burrow and look nothing like the adults, so do not assume a quiet tub is an empty one.

There is a moment most keepers have with this species. You look into the tub a few weeks after setting it up, see nothing but substrate and a couple of dark beetle-like things scuttling for cover, and wonder where the beautiful green insects you paid for have gone. Nothing has gone wrong. Cuban Cockroach nymphs are dark brown, flattened, and spend nearly all their time buried, and the pale mint-green adult that the species is famous for only appears at the final moult. Knowing that in advance saves a lot of unnecessary worry.

About the Cuban Cockroach

Also sold as the Green Banana Cockroach, Panchlora nivea comes from Cuba, the wider Caribbean and parts of Central America, and has established itself along the subtropical southern edge of the United States. Adults are around 2 to 2.5cm, which is small for a display roach, and they are a soft translucent green with a pale cream stripe along the leading edge of the wings. Under a light they look almost luminous.

They are a favourite as a feeder insect for dart frogs, mantids and small reptiles as well as being kept for their own sake, largely because they are soft-bodied and breed prolifically. I keep them for the look of them, but it is worth knowing that a well-run colony produces more than most keepers need.

Housing and containment

Start with containment, because it is the part that matters. Adults are competent fliers and will take to the air when disturbed, especially if you open the tub in a bright room. A clip-lock box with a well-seated lid is essential, and any ventilation holes need fine mesh rather than open gauze; the small nymphs will find anything coarser. I make a habit of opening the enclosure in a closed room, and low light keeps them noticeably calmer than a bright one.

A 9 to 15 litre tub houses a starter colony comfortably. Fill the base with at least 5cm of substrate so the nymphs have somewhere to burrow, then add cork bark, cardboard tubes or stacked egg crate above it for the adults to climb and shelter in. As with most roaches, vertical surface area matters more than floor area.

For substrate I use a base of flake soil and crumbled rotten wood mixed with untreated organic topsoil, topped with a good layer of leaf litter. The litter holds humidity, gives the nymphs cover, and provides something to graze between feeds.

Temperature and humidity

This is a tropical species and it shows. They do best in the low to mid twenties Celsius, and they will breed noticeably faster at the upper end of that. In a heated UK home they will tick along at room temperature for much of the year, but a thermostatically controlled heat mat fixed to the side of the tub is worth having through the winter months. Fit it to the side rather than underneath, so the burrowing nymphs can always move away from the heat.

Keep humidity moderate to high. In practice that means misting one end of the enclosure every few days and letting the other end stay drier, so the colony can choose. Damp is what you want; waterlogged is not, and a soaking substrate with poor airflow will sour quickly.

Feeding

Refreshingly undemanding. Soft fruit is taken enthusiastically, banana and orange especially, along with vegetables such as courgette, carrot and squash. Alongside the fresh food, keep a dry protein source permanently available; a good quality fish flake or a dry invertebrate food works well. Remove uneaten fresh food after a day or two, because it is the usual cause of both mould and smell.

They also need a source of moisture that is not a dish of open water, which small nymphs can drown in. Damp sphagnum moss, water crystals, or simply misting a section of the substrate all work.

Breeding and life cycle

Cuban Cockroaches are ovoviviparous, which means the female retains her egg case internally and gives birth to live nymphs rather than depositing an ootheca for you to find. If you are used to species that leave visible egg cases, the absence of them is not a sign that nothing is happening.

The nymphs are dark, flattened and burrowing, and they stay that way for months. Only at the final moult does the green adult emerge, which is genuinely a striking transformation to watch if you catch it. Adults are comparatively short-lived, so a colony works as a rolling population rather than a set of long-lived individuals. Give them warmth, depth of substrate and steady food and they build up on their own without intervention.

Handling and temperament

These are not a handling species, and I would not recommend trying. They are fast, they fly, and the odds of ending the session with a roach on your ceiling are high. They are entirely harmless, with no bite and no defensive chemistry worth mentioning, but they are best appreciated through the side of the tub.

Is this the right roach for you?

I would put the Cuban Cockroach as a second or third species rather than a first. Not because the husbandry is hard, because it is not, but because the flight risk means small mistakes have consequences that a beginner may not have planned for. If you have kept a species like the wingless Madagascar Hissing Cockroach and have your escape-proofing habits established, this is an excellent next step and one of the best-looking insects in the hobby for the money.

If you want something equally striking that stays put, the hard-shelled Emerald Cockroach is worth a look, and our Emerald Cockroach care guide covers how it differs.

Frequently asked questions

Do Cuban Cockroaches fly?

Yes, and they do it well. Adults are strong fliers and will take off when startled or when the enclosure is opened in bright light. This is the single most important thing to plan for before buying.

Why are my Cuban Cockroach nymphs brown and not green?

Because that is what they look like. Nymphs are dark brown and flattened, and they burrow. The pale green colour only appears when they reach adulthood at the final moult.

Do Cuban Cockroaches bite?

No. They have no interest in biting and no capacity to do you any harm. The only practical risk they pose is escaping.

How big do Cuban Cockroaches get?

Adults reach roughly 2 to 2.5cm, so they are small compared with a hissing cockroach but large enough to see and appreciate easily.

Can Cuban Cockroaches climb glass?

Yes, and they fly as well, so smooth-sided containment on its own is not enough. A well-fitting lid with fine mesh over the ventilation is what keeps them where they should be.

What do Cuban Cockroaches eat?

Soft fruit and vegetables alongside a permanently available dry protein food, plus leaf litter to graze. They are not fussy, and overfeeding fresh food is a more common problem than underfeeding.

Are Cuban Cockroaches good feeder insects?

They are widely used as feeders for dart frogs, mantids and small reptiles because they are soft-bodied and breed quickly. Bear in mind that adults fly, so they suit feeding in an enclosed viv rather than free-range.

You can see current availability on the Cuban Cockroach page, and the rest of the range is on our cockroaches for sale collection.