How to Breed Discoid Roaches: Complete Colony Guide

Why Breed Your Own Discoid Roaches?

If you keep one or more insectivorous reptiles, you know that feeder insect costs add up fast. A single adult bearded dragon can eat 15-20 discoid roaches per week. Add a leopard gecko, a chameleon, or a monitor to the mix, and you're placing orders every week or two. A breeding colony eliminates that ongoing expense — after the initial setup and a few months of patience, you'll have a self-sustaining supply of feeders in every size, on demand, forever.

Beyond cost savings, breeding gives you complete control over what your feeders eat (and therefore what your reptiles eat), ensures a constant supply of the exact sizes you need, and provides the satisfaction of a fully self-sufficient feeding operation.

What You Need to Get Started

The Container

Use a large plastic storage bin — minimum 40 gallons for a breeding colony. Larger is better, as it provides more surface area, better airflow, and room for population growth. Rubbermaid and Sterilite bins work great. The bin must have smooth interior walls — discoid roaches cannot climb smooth plastic, so the bin itself is escape-proof.

Ventilation

Cut two large rectangular openings in the lid (roughly 6x12 inches each) and hot-glue fine aluminum window screen or fiberglass mesh over the holes. Adequate ventilation prevents humidity buildup, mold, and mite infestations. This is non-negotiable — a sealed bin will develop problems quickly.

Hides

Stack egg crate flats vertically inside the bin. Egg crate provides enormous surface area in a small footprint, gives roaches the dark hiding spaces they prefer, and allows frass to fall to the bottom rather than accumulating on surfaces. For a 40-gallon bin, 8-12 egg crate flats provide ample space for a colony of several hundred.

Heat Source

Temperature is the most critical factor for breeding. You need a reliable heat source that maintains 85-95°F inside the bin. Options include:

• Undertank heat mat: Attach to the side of the bin (not underneath) with aluminum tape. Covers a good area and provides consistent gentle heat.
• Ceramic heat emitter: Mount above the bin on a clamp lamp. Good for heating from above. Use with a thermostat.
• Heat cable or heat tape: Wrap around the exterior of the bin. Flexible and effective for larger setups.

Always use a thermostat or at minimum a thermometer to monitor interior temperatures. Overheating kills roaches quickly.

Your Starter Colony

You'll need breeding-age adults to start. A good starter colony includes 50-100 mixed adults with a male-to-female ratio of roughly 1 male per 3-5 females. You can purchase a ready-made starter colony kit that includes properly sexed adults and mixed-age nymphs to jump-start your population.

Sexing Adults

Sexing discoid roaches is straightforward once they reach adulthood:

• Males: Full-length wings that completely cover the abdomen. Body appears sleeker and more streamlined. Males are slightly smaller overall.
• Females: Short wing stubs that leave most of the abdomen exposed. Body is wider, rounder, and heavier. Females are larger overall.

Nymphs cannot be reliably sexed until they reach their final molt into adulthood, typically at 4-6 months of age.

Temperature for Breeding

This cannot be emphasized enough: temperature is the number one factor that determines whether your colony breeds productively or stagnates.

• Below 80°F: Breeding slows to a crawl or stops entirely. Roaches are alive and healthy but not reproducing.
• 85-90°F: Active breeding. Females carry and deliver nymphs at a steady rate.
• 90-95°F: Peak breeding activity. Fastest reproduction, shortest gestation, highest nymph output. This is where commercial breeders operate.
• Above 100°F: Danger zone. Roaches begin dying from heat stress.

Maintain temperatures 24/7 — don't let the bin cool down significantly at night. A thermostat-controlled heat source is the best way to ensure consistency.

Feeding Your Breeding Colony

Breeding females have higher nutritional demands than non-breeding roaches. Provide:

• Protein sources: High-quality dry dog food (ground or kibble), fish flakes, commercial roach chow. Protein is essential for egg production and nymph development.
• Fresh produce: Carrots, squash, sweet potato, dark leafy greens, apple slices. Provides vitamins, minerals, and moisture.
• Dry grains: Rolled oats, wheat bran, chicken feed. Provides carbohydrates and fiber.
• Water crystals: Always available. Never use open water — nymphs drown easily.

Remove uneaten fresh food within 48 hours to prevent mold. Keep dry food and water crystals available at all times.

The Breeding Timeline

Patience is essential. Here's a realistic timeline starting from a colony of 50-100 adults:

• Weeks 1-2: Acclimation period. Roaches adjust to their new environment. Little to no breeding activity expected.
• Weeks 3-6: Breeding begins. Females mate and begin carrying egg cases (oothecae) internally.
• Weeks 6-14: First nymphs appear. Discoid roach gestation is approximately 60 days. You'll start seeing tiny white nymphs at the bottom of the bin.
• Months 3-6: Population growth accelerates. First-generation nymphs are growing while adult females continue producing new broods. You may begin harvesting feeders from the colony.
• Months 6-12: Colony reaches self-sustaining equilibrium for 1-2 reptiles. First-generation nymphs reach adulthood and begin breeding themselves.

For larger collections of reptiles, start with more adults or run multiple colony bins in parallel.

Nymph Care

Discoid roach nymphs can remain in the same bin as adults — there is no significant risk of adult roaches eating nymphs. Ensure that:

• Small water crystals are available (large crystals can trap tiny nymphs)
• Food is accessible at ground level (nymphs can't climb to food placed on top of egg crates)
• Temperature remains consistent (nymphs are more sensitive to temperature drops than adults)
• Ventilation is adequate (nymphs are more susceptible to mold-related issues)

Common Breeding Problems

Colony Isn't Producing Nymphs

Check temperature first — this is the cause 90% of the time. If the bin interior is below 85°F, increase heat. Also verify that you have both males and females, that protein-rich food is available, and that the colony has had at least 8 weeks to acclimate and complete a gestation cycle.

High Nymph Mortality

Usually caused by dehydration. Tiny nymphs dehydrate faster than adults and need constant access to water crystals. Also check for grain mites, which can overwhelm small nymphs.

Mold in the Bin

Too much moisture and not enough ventilation. Remove all rotting food, improve airflow by adding more ventilation holes, and reduce the frequency of high-moisture foods temporarily.

Slow Growth Rate

Nymphs grow faster at higher temperatures and with adequate protein. If growth seems stalled, increase heat toward 90°F and ensure protein-rich dry food is always available.

A Realistic Expectation

Let's be honest: breeding discoid roaches takes patience, space, and a tolerance for keeping large numbers of insects in your home. It's not for everyone. If you only keep one reptile and prefer the convenience of ordering feeders as needed, that's a perfectly valid approach — and we're happy to ship you fresh, gut-loaded roaches whenever you need them.

But if you keep multiple animals, want to save money long-term, or simply enjoy the self-sufficiency of producing your own feeders, a breeding colony is one of the most rewarding projects in the reptile hobby. Start with a starter colony from All Angles Creatures and we'll help you every step of the way.

— Matt, Founder, All Angles Creatures