What do dart frogs eat?

Almost entirely micro-feeders. Flightless fruit flies (Drosophila melanogaster for small species and froglets, Drosophila hydei for larger adults) are the staple, supplemented with springtails, isopods, pinhead crickets, and bean weevils. Dart frogs are tiny and eat tiny prey — anything bigger than a fruit fly is too big for most of them.

Are discoid roaches good for dart frogs?

No, not as a staple. Adult discoid roaches are roughly two inches long — far too big for a dart frog to even attempt. Dart frogs are micro-predators built for fruit-fly-sized prey. Save discoids for larger amphibians like pacman frogs, White's tree frogs, and big toads, and feed dart frogs flightless fruit flies and springtails instead.

How often should I feed my dart frog?

Adult dart frogs do well on a feeding every day or every other day — dust a small pile of flightless fruit flies and offer enough that they're hunted down within a few hours. Froglets and juveniles eat more often, often daily, because they're growing fast. Watch body condition rather than counting flies exactly.

Do I need to dust feeders for dart frogs?

Yes, and it's non-negotiable. Fruit flies and springtails carry very little calcium on their own, so dust with a fine calcium powder at nearly every feeding and a vitamin-A-inclusive amphibian multivitamin once or twice a week. Skipping this is the most common cause of metabolic bone disease and short tongue syndrome in captive dart frogs.

What are springtails and why do dart frog keepers culture them?

Springtails (Collembola) are tiny soil invertebrates that do double duty: they're a micro-feeder small enough for froglets and the smallest frogs, and they're a cleanup crew that eats mold and decaying matter in a bioactive vivarium. Most dart frog keepers run a springtail culture alongside their fruit flies — they're cheap, self-sustaining, and great for seeding a new tank.

Can dart frogs eat pinhead crickets?

Small species, freshly hatched pinhead crickets are accepted as variety, but they're a secondary feeder, not a staple. Crickets climb, can bite delicate amphibian skin, and are harder to dust evenly than fruit flies. Use them to add variety for larger dart frogs, not as the foundation of the diet.

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Amphibians

Live Feeder Insects for Dart Frogs and Amphibians: A Keeper's Sizing Guide

By Matt Goren · Updated June 25, 2026

I've kept feeder cultures running for years, and the single most common mistake I see new amphibian keepers make is feeding the wrong-sized prey. A dart frog is not a small bearded dragon — it's a micro-predator that eats things you can barely see, and handing it a cricket or a roach the size it can't physically eat is a fast track to a frog that slowly starves in a tank full of food.

This guide sorts the feeder question by animal, because amphibians span an enormous size range. Dart frogs need almost-microscopic prey. Pacman frogs swallow insects the size of your thumb. Tree frogs sit in between. I'll walk through what actually works for each, the sizing rules that prevent disasters, how to gut-load and dust, and where the cheap, store-promise advice goes wrong.

The one rule that matters most: size the prey to the frog

Before any species detail, internalize this: a feeder should be no longer than the width of the frog's head, and for dart frogs, much smaller still. Amphibians swallow prey whole. Too-large prey causes choking, impaction, regurgitation, and refusal. Too-small prey for a big frog just means you're feeding all night. Match the bug to the mouth and almost everything else falls into place.

Amphibian skin is also far more delicate than reptile scales — thin, moist, and permeable. That changes the calculus on feeders that bite (crickets) or feeders that can foul water (anything that drowns). I weigh those factors heavily below.

Dart frogs (Dendrobatidae)

Dart frogs — Dendrobates, Phyllobates, Oophaga, Ranitomeya and their relatives — are tiny, jewel-colored frogs that eat exclusively small invertebrates. In the wild they hoover up ants, mites, springtails, and other micro-arthropods, which is also where they accumulate the alkaloids that make wild frogs toxic (captive-bred frogs raised on cultured feeders are not toxic). In captivity their diet is a short, specific list of micro-feeders.

Flightless fruit flies (Drosophila) — the staple

Flightless fruit flies are the backbone of every dart frog diet I run. There are two species you'll use:

Drosophila melanogaster — the smaller fly, ideal for froglets and small species like thumbnails (Ranitomeya) and Oophaga pumilio.
Drosophila hydei — noticeably larger, suitable for adults of the bigger species like Dendrobates tinctorius, D. auratus, and D. leucomelas.

Buy or culture flightless (wingless or vestigial-wing) strains, never flying ones — flying fruit flies will colonize your house. A single culture produces flies continuously for about three to four weeks, so I keep cultures staggered a week apart so there's always one in peak production. To feed, tap a pile of flies into a deli cup, dust them, and tap them into the tank.

Springtails (Collembola)

Springtails are tiny jumping soil invertebrates that pull double duty in a dart frog setup. As a feeder, they're small enough for the tiniest froglets and the smallest adult species — often the only thing a fresh froglet can eat. As a cleanup crew, they devour mold and decaying matter, which is exactly why they're a foundation of a bioactive vivarium. I seed every new tank with springtails weeks before frogs go in, and I keep a backup culture going so I can re-seed anytime. If you're setting up your first dart frog tank, a healthy springtail culture from All Angles Creatures is one of the cheapest and most useful things you can buy — it feeds the smallest frogs and keeps the soil clean.

Other micro-feeders for variety

A fruit-fly-only diet works, but variety is better. Three additions I rotate in:

Bean weevils (bean beetles, Callosobruchus maculatus) — slightly larger than melanogaster flies, cultured on dried black-eyed peas, and a clean, easy source of dietary variety for larger dart frogs.
Dwarf isopods (Trichorhina, dwarf white or dwarf purple) — like springtails, both a micro-feeder and a cleanup crew. Larger dart frogs pick them off the substrate.
Pinhead crickets — freshly hatched crickets are accepted by larger species as occasional variety. They're a distant secondary, though: they climb, they can nip delicate skin, and they're harder to dust evenly than flies.

One thing I want to be blunt about, because the internet gets it wrong: discoid roaches are not a dart frog feeder. Adult discoids run about two inches — comically too large for a frog that tops out around an inch and a half. The very smallest, newly hatched discoid nymphs are sometimes pitched for the biggest dart frog species, but they're fiddly to size correctly and easy to get wrong. For dart frogs, stick with fruit flies and springtails as your foundation and skip the roaches entirely. Roaches earn their keep with the larger amphibians below.

Tree frogs (Hylidae and relatives)

Tree frogs are arboreal insectivores spanning a wide size range, so the feeder answer depends entirely on the species.

White's tree frogs (Litoria caerulea)

White's are large, robust, enthusiastic eaters — basically the labrador retrievers of the frog world, including the tendency to get fat. They readily take:

Appropriately sized roaches as a staple protein. Roaches stay on the ground, can't climb smooth glass, and don't bite.
Crickets, which they'll eat but which bring the usual downsides — smell, noise, and biting risk to that soft frog skin.
Hornworms, excellent for hydration and eaten eagerly as a treat.
Earthworms, a natural, nutritious occasional feeder.

Feed an adult White's three to five appropriately sized insects every two to three days, and lean toward less — these frogs balloon if overfed.

Red-eyed tree frogs (Agalychnis callidryas)

Smaller and more delicate than White's, red-eyes do best on smaller prey:

Appropriately sized small roach nymphs — protein-rich, ground-level, harmless.
Small crickets — accepted, but they climb all over an arboreal enclosure, which is annoying and stressful.
Larger flightless fruit flies (D. hydei) for smaller individuals and recently morphed frogs.

Feed every two to three days, three to five insects per session.

Gray, green, and other medium tree frogs

Most medium North American and tropical tree frogs eat small-to-medium feeders readily. In an arboreal setup, the practical advantage of roaches over crickets is simple: roaches stay on the ground where you can see them, while crickets climb everywhere, hide, stress the frogs, and make uneaten-prey cleanup a chore.

Pacman frogs (Ceratophrys)

Pacman frogs are the garbage disposals of the amphibian world — sit-and-wait ambush predators that strike at anything that moves and fits in their enormous mouths. Feeding them is easy; not over-feeding them is the hard part.

Large roaches make an excellent staple. The roach walks past, the pacman strikes — clean, nutritious, effective.
Hornworms are eagerly accepted and great for hydration.
Earthworms and nightcrawlers are an outstanding natural prey item.
Superworms are an occasional treat only — too high in fat for regular feeding.

Feed an adult pacman two to three large prey items every five to seven days. They are extremely prone to obesity, so with pacmans, less truly is more.

Smaller and aquatic amphibians

African dwarf frogs are fully aquatic and eat aquatic foods — frozen bloodworms, brine shrimp, and sinking carnivore pellets. They are not fed terrestrial insects.
Fire-bellied toads take small insects: small roach nymphs, small crickets, and fruit flies, three to five small items every two to three days.

Salamanders and newts

Terrestrial salamanders (tiger, fire) eat earthworms as a preferred natural food, plus appropriately sized roach nymphs for the larger species and waxworms as an occasional treat.
Aquatic salamanders and newts (axolotls, fire-bellied newts) eat aquatic prey — bloodworms, blackworms, brine shrimp, and sinking pellets — rather than terrestrial insects.

Gut-loading: the feeder's diet becomes your frog's diet

Whatever you feed, the rule is the same one I drill into every keeper: the insect's diet is your amphibian's diet, one step removed. A fruit fly is essentially a delivery vehicle for whatever it last ate. Keep cultures on a quality media (most commercial fruit fly media is fortified for exactly this), and for larger feeders like roaches and crickets, load them with leafy greens, squash, carrot, and a dry protein base for 24–48 hours before you feed off. Hungry, empty feeders are nearly hollow nutrition.

Supplementation: where dart frogs live or die

This is the section that prevents the most common captive amphibian tragedies. Insects are naturally calcium-poor and phosphorus-heavy, and that imbalance, left uncorrected, causes metabolic bone disease — soft bones, deformities, and in frogs the heartbreaking "short tongue syndrome," where a vitamin-A and calcium deficiency leaves the frog unable to project its tongue to feed. The Merck Veterinary Manual's section on amphibian nutrition is a solid, non-commercial primer on these requirements.

My standing protocol:

Nearly every feeding: lightly dust feeders with a fine calcium powder (with or without D3 depending on whether you provide UVB).
Once or twice weekly: dust with a quality amphibian multivitamin that includes vitamin A.

For dart frogs this is critical, not optional. Their prey items are so tiny that they carry almost no inherent nutrition — the supplement dust is doing most of the nutritional work. A fine powder matters too: a coarse supplement won't cling to a fruit fly. For more on the biology and natural diets behind these requirements, AmphibiaWeb, maintained by UC Berkeley, is an excellent species-by-species reference.

Why ground-dwelling feeders beat crickets for amphibians

Across nearly every amphibian I keep, I reach for roaches and cultured micro-feeders over crickets, for reasons that are specific to amphibian biology:

They stay where the frog hunts. Roach nymphs stay at substrate level where ground-dwelling and ambush feeders look; crickets climb out of reach.
They don't bite. Crickets bite, and thin, permeable amphibian skin injures far more easily than reptile scales.
Softer exoskeleton. Young roach nymphs and fruit flies are softer-bodied than crickets or mealworms — easier to digest.
No drowning, no fouling. Crickets drown in water features and foul the water; roaches and flies don't go looking for the pond.
Silence. Chirping crickets stress a frog 24/7; cultured feeders are silent.

The short version

Match the prey to the mouth: dart frogs eat flightless fruit flies and springtails, full stop — not roaches, which are far too big. Larger amphibians (pacman frogs, White's tree frogs, big toads, salamanders) take appropriately sized roaches, earthworms, and hornworms. Gut-load everything, dust with calcium nearly every feeding and a vitamin-A multivitamin weekly, and feed by body condition rather than by the clock. Get the sizing and the supplementation right and the rest of amphibian feeding is genuinely easy.

New to dart frogs? Start with my guide to choosing the right fruit fly culture for dart frog health and dart frog care made easy, or browse the full exotic animal care library.

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