Phyllobates Bicolor Care Sheet

By Allen, Owner & Head Breeder · Major League Exotics · Updated April 2026 · 11 min read

About Phyllobates bicolor

Phyllobates bicolor — the bicolored poison frog — is native to the rainforests of western Colombia. It is one of only three species in the genus Phyllobates and holds the distinction of being one of the most toxic vertebrates on earth in the wild. In captivity, however, captive-bred bicolor are completely non-toxic and are among the most rewarding and straightforward dart frogs to keep.

Bicolor are large, bold, and relentlessly active. Unlike some dart frogs that spend significant time hiding, a well-settled bicolor pair forages openly across the vivarium floor throughout the day. Their striking coloration — vivid yellow or orange dorsally with contrasting dark blue to black legs — makes them one of the most visually impressive dart frogs in the hobby. They are also one of the most aggressive hunters at feeding time, which makes observing them genuinely exciting.

Locales and the Aruba Bicolor

Like most dart frog species, Phyllobates bicolor has several geographic locales across its range in Colombia, each with distinct coloration. There are multiple recognized bicolor locales including aruba, nominat, and others — varying in the intensity and distribution of yellow, orange, and black patterning. All share identical care requirements but should never be mixed in the same enclosure.

The locale we carry at Major League Exotics is listed below. Check our dart frog collection for current availability as stock changes with each breeding season.

Aruba locale (currently available)

The aruba bicolor is characterized by vivid orange-yellow dorsal coloration with a distinct black border pattern and deep blue to navy-black legs. Named after a collection locality in Colombia. The contrast between the warm orange-yellow body and the dark blue legs is exceptional — particularly striking when the frog is perched in a colored bromeliad. One of the most visually impressive locales in captivity and a firm favorite among serious dart frog collectors.

A Note on Wild Toxicity

Phyllobates bicolor is one of the most toxic animals on earth in the wild — the skin secretions of wild specimens contain batrachotoxin, a steroidal alkaloid so potent it was historically used by indigenous Colombian communities to poison blowdarts. This is where the common name "poison dart frog" originates.

Captive-bred bicolor are completely non-toxic. Their wild toxicity comes entirely from their diet of specific toxic beetles (Choresine spp.) found in Colombian rainforest — prey that is impossible to obtain in captivity. Captive-bred bicolor on a fruit fly diet produce zero toxins. They are as safe to handle as any other captive-bred dart frog, with the same precautions (clean, damp hands, no soaps or lotions).

Every bicolor at Major League Exotics is captive-bred from our own breeding program and handles safely.

Housing & Enclosure

Bicolor are ground-dwelling frogs that use horizontal space more than vertical. They are active, large-bodied frogs and need a correspondingly spacious enclosure.

Recommended enclosure sizes

• A pair (recommended): 18×18×18 — the standard setup. Our Dart Frog Terrarium Kit works well for a bicolor pair.
• Group of 3–4: 24×18×18 or 24×18×24 — bicolor appreciate wider footprints over height. More space significantly reduces male territorial aggression.
• Single frog: 12×12×18 is possible but bicolor are social animals and do noticeably better in pairs.

Enclosure type

Front-opening glass terrariums are ideal. Cover 75–80% of the screen top with glass or acrylic to maintain humidity. Bicolor are somewhat more tolerant of humidity variation than imitators but still require consistent 80–100% to stay healthy long-term.

Temperature & Humidity

Temperature

Keep bicolor at 68–75°F (20–24°C) — the same range as most tinctorius locales. Key rules:

• Never exceed 80°F. Bicolor show heat stress at sustained temperatures above 80°F.
• No basking lamp or heat mat needed if room temperature stays in the 68–75°F range.
• A brief cool period to 65–68°F is tolerated well and can trigger breeding activity.
• Air conditioning is essential during summer in most of the US.

Humidity

Target 80–100% humidity with a brief mid-day dip to 70–75%. Bicolor are native to humid lowland rainforest and need consistent moisture. Mist once or twice daily with dechlorinated or reverse-osmosis water. A digital hygrometer inside the enclosure gives you accurate readings — don't rely on guesswork with dart frogs.

Substrate & Vivarium Setup

Bicolor should be kept in a bioactive planted vivarium. For a complete step-by-step build guide, see our dart frog vivarium setup guide.

Drainage layer

Start with 1.5–2 inches of HydroBalls clay pellets topped with drainage mesh. Bicolor are active ground-dwellers that add significant waste load to the substrate — a functional drainage layer keeps the enclosure from becoming waterlogged.

Substrate

ABG mix at 2.5–3 inches depth — tree fern fiber, long-fiber sphagnum moss, orchid bark, charcoal, and coco coir. Bicolor are energetic foragers and will uproot lighter plants — press plants firmly into the substrate and use well-rooted specimens.

Plants and hardscape

• Bromeliads: Multiple bromeliads at different heights. Bicolor use bromeliad axils as breeding sites and the vivid pink bromeliads make the orange coloration of the aruba locale appear even more striking.
• Pothos / Epipremnum: Hardy climbing plants that bicolor won't uproot. Good for creating visual barriers between territories.
• Selaginella: Dense groundcover. Bicolor forage through it constantly.
• Cork bark rounds: Ground-level hides that bicolor use regularly, especially when recently introduced to a new enclosure.
• Leaf litter: A generous layer across the substrate. Bicolor are active leaf litter hunters — this is a core behavioral element of their husbandry.

Microfauna

A healthy springtail colony established before frogs are introduced keeps the vivarium clean and provides supplemental nutrition. Feed the colony with springtail food weekly. Bicolor are voracious hunters and will actively pursue springtails throughout the day.

Lighting

Maintain a 10–12 hour photoperiod on a timer. Bicolor do not require UVB but benefit from full-spectrum lighting to support plant growth and natural coloration expression.

• Exo Terra TerraSky LED: Our top recommendation. Full spectrum, plant-supporting, minimal heat. Remote-controlled day/night cycle.
• Zoo Med ReptiSun T5 HO 36": Excellent plant growth output for an 18×18×18 or larger. Replace the bulb annually.

Feeding & Supplements

Feeder species

Bicolor are large enough to eat Drosophila hydei (flightless) as their primary adult feeder — the larger body size provides more nutrition per fly. Froglets under 3 months start on melanogaster before transitioning to hydei. Bicolor are among the most enthusiastic hunters in the hobby — feeding time is genuinely exciting to watch.

Feeding schedule

Supplementation

Dust every feeding with Repashy Calcium Plus. No exceptions. Bicolor develop metabolic bone disease on an unsupplemented fruit fly diet within months — often with no visible symptoms until advanced. Tap flies into a bag, add a light dusting, shake gently, and introduce immediately. See our dart frog feeding guide for full technique.

Cohabitation & Breeding

Group keeping

Bicolor can be kept as pairs or in small groups. A 1.1 pair (one male, one female) in an 18×18×18 is the most straightforward setup. Groups of 1.2 or 1.3 work well in larger enclosures. Males can be territorial — if one male is persistently chasing another or monopolizing feeding, separate them. Never mix bicolor with other species and never mix locales.

Sexing bicolor

Reliable sexing is possible in adults (8+ months). Females are typically larger, broader across the back, and rounder when gravid. Males are slightly slimmer and are the calling sex — bicolor males produce a soft buzzing call. Behavioral observation is the most reliable method: if calling is heard and courtship behavior observed, you have at least one of each sex.

Breeding

A healthy, well-fed pair in an established vivarium will breed reliably. Bicolor are less predictable about egg-laying sites than some species — they may use bromeliad axils, the underside of leaves, cork bark, or an artificial site like a film canister or petri dish placed on the substrate. Clutch size is typically 3–8 eggs. The male tends and moistens the eggs. Tadpoles hatch in 14–18 days and the male transports them to a water source. Metamorphosis takes 60–90 days. Remove froglets to a grow-out enclosure once fully formed.

Common Health Issues

Heat stress

The most common acute health problem for bicolor. Symptoms include lethargy, open-mouth breathing, or frogs sitting exposed in the middle of the enclosure. Act immediately — move to a cooler room, mist with cool dechlorinated water, open the top briefly. Sustained temperatures above 80°F cause irreversible organ damage.

Metabolic bone disease

Entirely caused by inadequate supplementation. Symptoms — curved spine, swollen or soft limbs, difficulty moving — develop slowly and are often not noticed until advanced. Prevent it completely with Repashy Calcium Plus at every feeding. There is no effective reversal once severe MBD develops.

Toxic out syndrome

Rapid systemic decline from airborne chemical exposure. Dart frogs absorb chemicals through their permeable skin. Never use cleaning products, insecticides, air fresheners, or scented candles near the enclosure. Even fumes from cooking sprays or paint in an adjacent room can cause serious harm.

Chytrid fungus

Rarely an issue in established captive-bred collections. Always quarantine new frogs for 30–60 days before introducing to an existing collection. Symptoms include lethargy, skin abnormalities, and loss of the righting reflex. Consult an amphibian veterinarian if symptoms appear.

Frequently Asked Questions