Top 5 Reptile Feeders Ranked by Nutritional Value
I keep reptiles and I run a feeder operation, so I get this question constantly: which feeder insect is actually the most nutritious? Most of the answers floating around online are either vague ("it depends!") or weirdly coy — I've seen entire ranked lists that hide the feeders behind "Feeder #1," "Feeder #2," and make you read four paragraphs to find out they're talking about crickets. That helps nobody.
So here's the honest version, with the names out front, the numbers on the table, and the tradeoffs stated plainly. I'll rank the top five feeders by nutritional value as a staple, show you the macros side by side, and tell you exactly where the popular worms really belong (spoiler: most of them are treats, not meals). Before the ranking, one truth that overrides everything below: no single feeder is a complete diet. Variety beats any one insect, calcium dusting is nearly always required, and UVB lighting is still mandatory no matter how well you feed. Keep those three in mind and the ranking becomes a tool instead of a shopping list.
How I'm ranking these
I'm ranking by nutritional value as a daily staple — meaning, if your reptile ate mostly this one feeder, how well would it do? That weighting rewards three things:
- Protein for muscle, growth, and repair (most insectivores want roughly 18% or more).
- A sane calcium-to-phosphorus ratio. Reptiles need calcium to come out ahead of phosphorus (the ideal dietary target is around 2:1). Almost every insect fails this, which is why it carries so much weight — the rare feeder that doesn't fail jumps up the list.
- Digestibility, which mostly comes down to chitin. A soft, low-chitin body means your animal absorbs more of what it eats; a hard, chitinous shell means waste and, in juveniles, impaction risk.
Fat matters too, but in reverse: high fat is fine for energy and useless-to-harmful as a staple. That's the line that separates my top four from the treat tier.
A note on the numbers: treat every figure here as approximate, as-fed, because real values swing with the insect's own diet, life stage, and source. The relationships between feeders are stable and reliable — that's what should drive your choices — but don't take any single percentage as gospel.
The nutrition table
Here's the whole field at a glance. I'll unpack each one below.
| Feeder | Protein | Fat | Moisture | Ca:P / chitin | Best role |
|---|---|---|---|---|---|
| Black soldier fly larvae (BSFL) | Moderate (~17–18%) | Moderate | ~60% | Favorable Ca:P (calcium-rich), soft | Staple — the calcium feeder |
| Dubia roach | High (~20–23%) | Moderate (~7–9%) | ~60–65% | ~1:1-ish, low chitin | Staple |
| Discoid roach | High (~20%) | Moderate | ~60% | Phosphorus-heavy, low chitin | Staple (legal where dubia aren't) |
| Cricket | Moderate (~18–20%) | Low–moderate | ~70% | Phosphorus-heavy | Staple / variety (gut-load + dust) |
| Mealworm | Moderate (~18–20%) | High (~13%) | ~60% | Phosphorus-heavy, hard chitin | Treat / supplement |
| Superworm | Moderate (~18%) | High (~15%+) | ~60% | Phosphorus-heavy, hard head | Treat |
| Waxworm | Low | Very high | ~60% | Poor | Occasional treat only |
| Hornworm | Low | Low | ~85% (mostly water) | Poor (but high moisture) | Hydration / treat |
1. Black soldier fly larvae (BSFL) — the calcium standout
BSFL (also sold as Phoenix worms, calci-worms, or NutriGrubs) take the top spot for one reason that outweighs everything else: calcium. They are one of the only feeder insects with a naturally favorable calcium-to-phosphorus ratio, which means they help fix the exact deficiency that every other feeder forces you to patch with supplement dust. For young, fast-growing reptiles and gravid females — the animals most at risk of metabolic bone disease — that's enormous.
They're also soft-bodied and low in fat, so they're easy to digest and they won't pack on weight the way mealworms do. The protein is moderate rather than spectacular, so I don't lean on them as the only staple, but as the calcium anchor of a rotation they're unmatched.
The honest drawbacks: they're small, so big reptiles need a lot of them, and they don't move much, which means movement-driven hunters (chameleons, some geckos) may ignore them sitting still. The trick is to "tumble" them in front of the animal or mix them with a livelier feeder. If you'd rather skip the live-larvae upkeep entirely, the dried form is a clean way to get the same calcium benefit on the shelf — I get into why in my piece on why dried black soldier fly larvae make a great go-to feed.
2. Dubia roaches — the protein staple
If BSFL win on calcium, dubia roaches win on the rest of the package. They run roughly 20–23% protein with a moderate ~7–9% fat level and a low chitin body that digests easily. Their calcium-to-phosphorus ratio is far from perfect but lands closer to ~1:1 than crickets do, so you're starting from a better baseline before you dust.
On top of the macros, dubia are simply the easiest staple to live with. They don't climb smooth walls, they don't smell, they don't chirp, they're hardy, and they gut-load beautifully — and what the roach eats becomes what your reptile eats. For most insectivores (bearded dragons, leopard geckos, chameleons), a gut-loaded, calcium-dusted dubia is about as close to an ideal everyday feeder as the bug world offers.
The one real catch isn't nutritional — it's legal. Dubia are restricted in some places, most notably Florida. If that's you, read on.
3. Discoid roaches — the legal equal
Discoid roaches are, for practical purposes, the nutritional twin of dubia: roughly 20% protein, moderate fat, low chitin, easy to digest, and excellent gut-loaders. Nutritionally I rank them a hair behind dubia only because dubia tend to run slightly higher on protein, but honestly they're close enough that I'd call it a tie in real-world feeding.
The reason discoids get their own slot is legality. Where dubia are banned (Florida especially), discoids are the accepted feeder that gives up almost nothing. Same containment perks — they can't scale smooth walls — same low odor, same clean nutrition. If you keep reptiles in dubia-restricted territory, this is your staple, full stop. I break the two down head-to-head in discoid roaches vs. dubia: which feeder insect reigns supreme.
4. Crickets — the dependable, flawed staple
Crickets are the feeder everyone starts with, and they earn their place: ~18–20% protein, low-to-moderate fat, high moisture, cheap, available everywhere, and their constant movement triggers a feeding response in even reluctant eaters. As a moderate-protein staple they genuinely work.
But they come with real homework. Crickets are phosphorus-heavy, with a calcium-to-phosphorus ratio that's actively backwards, so gut-loading and calcium dusting aren't optional — they're what make crickets safe. Skip them and you're feeding a diet that pulls calcium out of your reptile over time. They also have more chitin than roaches, they smell, they're noisy, they have short lifespans, and the escapees turn up behind your furniture for weeks.
My take: crickets are a perfectly good part of a rotation and a great variety/enrichment feeder. I just don't build a diet around them when a roach does the same job cleaner, quieter, and with better baseline minerals.
5. The treat tier — mealworms, superworms, waxworms, hornworms
This is where the popular "feeders" really live, and being honest about it prevents a lot of sick reptiles. These are supplements and treats, not staples. They earn one combined slot because they share a theme: each is great at one narrow job and bad as a daily diet.
- Mealworms — roughly 18–20% protein but around 13% fat with a hard, chitinous shell. Decent protein, but the fat adds up and the tough exoskeleton is hard on smaller reptiles and juveniles (an impaction risk). Fine in moderation; bad as the main course. If mealworms are your reptile's go-to, it's worth getting the portions right — see how many mealworms your reptile should eat daily.
- Superworms — about 18% protein and 15%+ fat, even richer than mealworms. Softer than mealworms and very active (good for hunting enrichment), but that fat makes them a treat. Reserve them for variety and the occasional energy boost.
- Waxworms — very high fat, low protein. These are candy. Outstanding for tempting a sick or off-feed animal to eat and for putting weight on something underweight, and genuinely harmful as a regular feeder. A few, occasionally, with a clear purpose.
- Hornworms — roughly 85% moisture, low protein, low fat. They're basically a hydration delivery system, which is exactly what makes them useful: fantastic for a dehydrated reptile or one that won't drink, and they can't carry a diet on that little protein. Great treat, never a staple.
The pattern: use these the way you'd use a vitamin or a dessert — deliberately, occasionally, for a reason — and never as the thing your reptile eats every day.
The truths that outrank the ranking
A list of feeders is only as good as the habits around it. These four apply no matter which insect you pick:
- Nearly every feeder needs calcium dusting. With BSFL as the partial exception, insects are phosphorus-heavy. Dust with a quality calcium supplement (plain calcium routinely, calcium-with-D3 or a multivitamin on a schedule appropriate to your species) before feeding. This is the cheapest, highest-impact thing you can do.
- UVB is still required. Dusting calcium onto an insect does nothing if your reptile can't process it. Most species need UVB lighting to produce the vitamin D3 that turns dietary calcium into bone. No amount of good feeding replaces proper lighting — that's one of the most dangerous myths in the hobby.
- Variety beats any single feeder. Every feeder has a gap; rotating across several covers everyone's blind spots and keeps your animal interested. A roach staple, BSFL for calcium, and the occasional treat-tier worm is a far stronger plan than maxing out one "best" bug.
- Gut-load 24–48 hours before feeding. Feed your feeders well — greens, vegetables, a good dry gut-load — for a day or two before offering them, so peak nutrition lands in your reptile at the moment of the meal.
So what should you actually feed?
Build a rotation on a roach staple — dubia if you can get them, discoid if you're in dubia-restricted territory — and add BSFL as your calcium anchor. Work crickets in for variety and enrichment, and keep the worm tier (mealworms, superworms, waxworms, hornworms) on the shelf for treats, hydration, and tempting picky or recovering animals. Dust nearly everything with calcium, run proper UVB, and gut-load before every feeding.
Do that and the "which feeder is best?" question mostly dissolves — you're not chasing one perfect bug, you're running a balanced rotation where each insect does the job it's actually good at. When you're ready to stock up on healthy, well-fed staples and treats, All Angles Creatures carries a full range of live feeder insects sized for everything from hatchlings to adult monitors.
Want to go deeper on the top staples? Read my head-to-head on discoid roaches vs. dubia and the case for dried black soldier fly larvae as a go-to feed.