Discoid Roaches vs. Termites for Crested Geckos: Which Feeder Wins?
I get this question from crested gecko keepers who've gone down the feeder rabbit hole and landed on an unusual matchup: discoid roaches versus termites. It's a more lopsided comparison than it looks. One is a proven, easy-to-keep staple supplement; the other is a high-protein curiosity that's a genuine pain to source and use. Let me walk through both honestly, because the termite hype isn't entirely wrong — it's just impractical for almost everyone.
First, the context that frames everything: crested geckos are omnivores, native to New Caledonia, living in the wild on ripe fruit, nectar, and small invertebrates. In captivity, the foundation of their diet is a complete commercial powder — a meal-replacement powder (MRP) — not insects. Live feeders are a supplement: extra protein, enrichment, and a trigger for natural hunting behavior. So the real question isn't "which feeder do I build the diet on," it's "which feeder is the better supplement to lay on top of a good MRP." That reframing matters.
Discoid roaches as a crested gecko feeder
Discoid roaches (Blaberus discoidalis) are the workhorse soft-bodied feeder of the hobby, and they suit crested geckos well. Nutritionally they run roughly 20–23% protein and a modest 6–9% fat, with around 65–70% moisture — lean, muscle-supporting, and not fattening, which matters because crested geckos obese easily on rich diets.
Their practical advantages are where they really pull ahead:
- Soft, low-chitin bodies that digest easily — important for a small, delicate gecko.
- They can't climb smooth surfaces and don't fly, so they won't scale the glass or escape into your home.
- A full size range, from tiny nymphs perfect for a crested gecko's small mouth up to adults — you simply pick the right size for the animal.
- They gut-load superbly. Feed the roach well and that nutrition transfers straight to your gecko, which is the single biggest lever you have on feeder quality.
- They're easy to keep alive for weeks, or breed at home for a self-sustaining supply.
One accuracy correction, because the internet repeats it constantly: discoid roaches do not have a "favorable" calcium-to-phosphorus ratio, and they are not the same animal as dubia roaches (Blaptica dubia) — discoids are Blaberus discoidalis. Like virtually all feeders, they're phosphorus-heavy and must be dusted with calcium before feeding. That's not a strike against discoids; it's true of nearly everything, which is exactly why dusting and good UVB/supplementation prevent metabolic bone disease, as the Merck Veterinary Manual on reptile nutrition lays out.
Termites as a crested gecko feeder
Termites genuinely have an appealing nutritional profile on paper: very high protein, low fat, soft-bodied with no hard exoskeleton, and small enough for even hatchling crested geckos to take easily. Because they feed on plant cellulose, their gut contents are relatively "clean," and their tiny size and active movement do stimulate hunting. If termites were as easy to buy and keep as roaches, they'd be a reasonable variety feeder.
The problem is everything around the nutrition:
- Sourcing is hard and risky. Termites aren't reliably sold as feeders. That pushes keepers toward wild collection — which means real risk of pesticides, treated-wood chemicals, and contaminants near homes. That alone disqualifies them for most people.
- You basically can't gut-load them. Termites eat cellulose (wood, paper), so you can't enrich them with calcium and vitamins the way you load a roach. Whatever they bring is what your gecko gets — and with a phosphorus-leaning mineral profile, that's a problem.
- They're fragile to keep. Termites need specific conditions to stay alive and aren't built for a feeder tub on a shelf.
- Calcium is still off. Their calcium-to-phosphorus ratio is imbalanced (phosphorus-heavy), and because you can't gut-load or easily dust a swarm of tiny termites, correcting it is awkward.
So the termite case is "great nutrition you can't reliably get, keep, or properly supplement." For a hobbyist with access to a clean cultured colony, fine — a novel variety item. For everyone else, it's not worth the risk.
Head to head
| Discoid roaches | Termites | |
|---|---|---|
| Protein | ~20–23% | Very high |
| Fat | Low (~6–9%) | Low |
| Calcium ratio | Phosphorus-heavy — dust it | Phosphorus-heavy — hard to correct |
| Gut-loadable? | Yes — excellent | No (eats cellulose) |
| Sizing for cresties | Tiny nymphs to adults | Naturally tiny — easy |
| Sourcing | Easy, sold widely | Hard; often wild-collected |
| Contamination risk | Low (captive-bred) | High if wild-caught |
| Keeping at home | Easy / breedable | Fragile, demanding |
| Verdict | Practical staple supplement | Novelty only |
What I actually recommend
For nearly every crested gecko keeper, discoid roaches are the better feeder by a wide margin — not because their raw nutrition crushes termites, but because they're the one you can buy, keep, size, gut-load, dust, and feed safely week after week. Termites win a spec sheet and lose the real world.
Here's the diet I'd run:
- Commercial MRP as the foundation, available most days. This is the nutritionally complete base — don't skip it in favor of insects.
- Live feeders as a supplement, once or twice a week. Small discoid roach nymphs sized to no longer than the width of the gecko's head (crested geckos are smaller-mouthed than leopard geckos, so err tiny). AAC stocks healthy discoid roaches down to small nymph sizes that suit crested geckos perfectly.
- Gut-load the roaches for 24–48 hours before feeding — fresh produce plus a quality grain base.
- Dust with calcium before offering (calcium-plus-D3 or multivitamin on schedule).
- Rotate variety if you like — small crickets, the occasional silkworm — for enrichment, while keeping fat treats rare to avoid obesity.
- Skip wild termites entirely. If you ever try cultured termites as a novelty, treat them as a rare extra, never a staple, and never wild-collected.
The bottom line
Discoid roaches or termites for a crested gecko's diet? Discoid roaches, comfortably — they're the safe, sustainable, gut-loadable supplement that pairs with a commercial diet to keep a crested gecko thriving. Termites are an interesting footnote with good protein numbers and too many practical and safety problems to recommend. Build on the MRP, supplement with dusted discoid nymphs, and you've got it covered.
Comparing feeders for crested geckos? See the full exotic animal care library, and if you want a steady home supply, read how to keep discoid roaches alive.