ReptiFlow

Care sheets

Amphibians

White's tree frog

Litoria caerulea

Photo: Australia green tree frog (Litoria caerulea) crop · LiquidGhoul · Public domain · Changes and credits

These guides provide general husbandry information and do not replace veterinary assessment. If your animal shows symptoms or its condition worsens, contact a veterinarian experienced with exotic animals.

Care sheet sourcesTree of Life Exotic Pet Medical Center — White’s tree frogUniversity of Michigan — Animal Diversity Web: Litoria caeruleaBrad Harper — Litoria caerulea husbandry manual, chapters 10–11Sam Forster — Green tree frog breeding experienceAZA — Amphibian Husbandry Resource Guide: quarantineBaines et al. 2016 · UV-Tool, species tableBaines 2024 · UVB lighting for reptilesMerck Veterinary Manual — Proximate Analysis of Whole PreyArbor View Animal Hospital · Axolotl lightingArcadia · Low UV species, local basking UVICDC — Reptiles and Amphibians: hygiene and cross-contaminationMerck Veterinary Manual — Management and Husbandry of Reptiles: quarantine
Temperatures
Warm zone
Warm perch: 28–29 °C
Cool zone
Cool air: 24–27 °C
Recommended enclosureAt least 75.8 L, tall, for one; about 45.8 × 45.8 × 61 cm or larger for pairs.Length × depth × height
HumidityMaintain humidity at 50–70%, with drying periods and water available.
Adult sizeApproximately 7.5–13 cm; females larger

Description

Litoria caerulea is a sturdy tree frog from Australia and New Guinea. It has broad adhesive toe discs, horizontal pupils and green or brownish skin, sometimes flecked with white. Mainly nocturnal, it rests in cavities and vegetation and captures invertebrates; males give deep calls during breeding activity.

Lifespan10–15 years or more

Housing together

Litoria caerulea can be kept singly or with similarly sized conspecifics. Do not combine juveniles and adults: a smaller individual may be swallowed. For multiple frogs increase space and distribute perches and hides; observe each meal and separate any frog unable to feed. Do not create a mixed-species frog community.

Enclosure and climate

Provide sturdy branches and retreats at several heights that can support the frog’s weight. Offer shallow dechlorinated water and change it daily. Maintain ventilation and allow surfaces to dry between mistings.

Night: 21–22 °C.

Setup

Prepare new water in a dedicated container and treat chlorine and chloramine before using it for dishes, substrate or misting, following product instructions.

Making height usable

Secure horizontal, sloping and vertical branches to the structure, using diameters that offer grip and supports suitable for adult weight. Connect them from the exposed lighting branch to the cool area, distributing supports across levels. Place hide entrances beside branches; add foliage along routes without blocking dishes, doors or vents.

Testing and access

Connect specified heat sources to compatible thermostats and guard against contact. Secure probes according to device instructions; measure air at resting sites and heated surfaces separately with independent instruments. In housing with water, also check water temperature and quality: one zone’s thermostat does not control the others.

With the complete enclosure running, record day and night readings and compare them with the sheet. Test doors, cable openings and cleaning access, keeping vents clear. Change one variable at a time and recheck after each adjustment.

Lighting and UVB

Zone 2: partial or occasional exposure; ecological UVI band 0.7–1.

At the exposed position aim for approximately UVI 2–3, measured at the back or head. The animal must choose its exposure and reach UVI 0 retreats. This local target differs from the Ferguson ecological band and should not be maintained everywhere throughout the day.

UVB is recommended at an intensity appropriate to the species, with the option to withdraw from the light. Evidence of its necessity varies between animals: assess exposure alongside diet and species identification.

UVA: the precise requirement is not established for this entry; no separate UVA source is prescribed. Evaluate illumination, retreats and life stage together.

Linear UVB tube with reflector. Indicative UVB percentage stated on the lamp: 2–7%; final selection depends on UVI achieved at the actual distance.

For maintenance, a cycle of approximately 12 hours of light and 12 hours of darkness can serve as an initial reference. Use a timer to switch lights off at night, and keep retreats available so the animal can withdraw from light during the day. Adapt day length to species and origin, following the specific guidance for seasonal care and breeding.

Lamp-to-back distance: internal mounting and above meshInternal lampLamp above mesh30 cm40 cmd = source-to-back distance, not source-to-floor distance
Example with height 60 cm and animal height 25 cm. Not to scale: distances describe layout without guaranteeing UVI or a safe clearance for every lamp. Check the model used, mesh and all reachable points.

Light in the animal’s daily life

Provide sheltered resting sites at the height of the exposed patch. Check back-height readings when the frog is on glass or mesh, not just on the intended branch.

An example layout in the enclosure

To make the layout concrete, take housing measuring 45 × 45 × 60 cm, using the first dimensional configuration in the sheet. This is a mounting example: retain the conditions and any alternatives attached to the stated minimum.

In a wooden enclosure with internal lighting, imagine the tube 55 cm above the floor and the back or head at 25 cm. The geometric distance is therefore 30 cm. The branch or platform lies below animal height, according to body size. Place lighting over one side, with a route to fully screened retreats.

In a glass enclosure with a mesh roof, retain the same animal height and imagine the tube 5 cm above the mesh: distance becomes 40 cm. Mesh attenuates UV variably; ordinary glass roofs block UVB. Increasing the percentage alone is insufficient: measure beneath the mesh and adjust height, output or layout as needed.

These distances describe the example, not a safe clearance for every lamp. Select the source and adjust mounting until approximately UVI 2–3 is measured at animal height in the exposed position. Also respect the minimum clearance specified for the model used. Recheck with furnishings, guards and mesh installed, including the highest reachable points and animal growth.

Choosing and checking lighting

First define the patch that should illuminate the whole body and the route to a screened retreat. For a broad patch, select a linear tube with reflector; consider a compact only if its useful patch covers the body and leaves an accessible gradient. Check model, output, reflector and mounting distance, then compare measured UVI with the species target. Label UVB percentage alone cannot determine distance and intensity.

The decisive check uses a UVI meter facing the source at animal height. Check the centre and edges of the exposed patch, the highest supports and retreats, which must allow withdrawal from UV. Repeat after moving equipment, changing lamps and plant growth. Without a meter, use the manufacturer’s instructions and measurements for the exact configuration, including safety clearances.

When UVB or UVA are absent

When keeping without UVB, D3 must be supplied through a complete diet or species-appropriate supplementation. Calcium alone does not replace D3. Check existing amounts in prepared diets and multivitamins before combining products; dosage also depends on diet and cannot be derived from lighting hours.

UVA has no dietary replacement. Maintain appropriate illumination and photoperiod without adding an intense source to compensate for unverified information: amphibian exposure must be evaluated by species and life stage.

Humidity and ventilation

Maintain humidity at 50–70%, with drying periods and water available. Place the hygrometer beside resting branches, outside the direct water spray, and compare readings with the cool area. Record the trend after water input; if readings stay outside the specified range, check foliage blocking vents and surfaces that remain wet before adjusting misting.

Feeding

Offer Litoria caerulea varied invertebrates with appropriate supplementation. This species readily becomes overweight: monitor weight and body condition to adjust the ration. Abnormal or persistent swelling requires veterinary assessment rather than assuming it is only fat.

Recommended foods

The tiers describe dietary use: rotate foods within each tier rather than treating them as an absolute nutritional score.

FoodDietary roleBenefits and limitsPreparation
Crickets and locustsMain choicesSupply protein and encourage hunting; calcium is low relative to phosphorus, so preparation and supplementation are needed.Use captive-bred insects and gut-load them as described below. Select suitably sized feeders, place the meal’s batch in a clean container and apply a thin calcium coating immediately before offering them.
Feeder roachesMain choicesThese feeders provide a useful second protein source for rotation, but do not constitute a complete diet or replace calcium supplementation.Offer well-fed soft nymphs sized to the mouth; avoid excessively hard adults.
Silkworms and black soldier fly larvaeFor rotationDiversify texture and nutrients. Black soldier fly larvae can supply more calcium, but content depends on rearing: they do not make the entire diet complete.Choose appropriately sized feeder larvae. Keep silkworms on their specific food; check the supplier’s supplementation guidance.
Waxworms, mealworms and superwormsOccasionalFat-rich larvae concentrate energy and often contain little calcium: use as a small part of variety, not the sole food.Replace part of the meal instead of adding them to a full ration. Avoid hard or oversized larvae for small animals.
Wild insects, fireflies and contaminated preyAvoid / not a stapleMay carry pesticides, parasites or toxins; a healthy appearance does not establish safety.Use traceable feeder cultures; do not collect insects beside roads or treated gardens.

Comparable nutritional values

Protein, fat, calcium and phosphorus are percentages of dry matter, excluding water; dry matter itself is a percentage of fresh weight. These are reference analytical values compiled in a clinical table, not guaranteed contents of your batch or a universal ranking. Age, rearing, feeding and supplementation change composition. Do not compare them directly with fresh-food percentages or already diluted prepared diets. Comparable numbers are not provided for other foods.

InsectDry matterCrude proteinCrude fatCalcium / phosphorusCa:P
Adult house cricketAcheta domestica32% of fresh weight62.6% DM20.4% DM0.3 / 1% DM0.3:1
Migratory locustLocusta migratoria31% of fresh weight67.5% DM14% DM0.1 / 0.7% DM0.14:1
Mealworm larvaTenebrio molitor32.8% of fresh weight52.8% DM36.1% DM0.3 / 0.8% DM0.37:1

DM = dry matter. Ca:P describes calcium relative to phosphorus before supplementation: a protein-rich feeder may still be calcium-poor. Offered portions remain those for this species and life stage.

Meals by age and size

Stage and sizeFrequencyAmount per meal
Newly metamorphosed: tail absorbed and terrestrial feeding establishedDaily, small portionsPinhead crickets or other microfeeders in small batches; count catches for about 5 minutes. Do not leave large crickets with newly emerged froglets.
Growing juveniles and subadultsDaily, moving to alternate days as growth slowsInitial trial portion: 3–5 small insects, one at a time. Count those eaten in about 5 minutes; stop when interest wanes rather than continually refilling. Adjust the count to actual prey size and growth.
Adults with slowed growth3 meals weeklyInitial trial portion: 3–5 small insects, one at a time. Count those eaten in about 5 minutes; stop when interest wanes rather than continually refilling. Adjust the count to actual prey size and growth. A suitable earthworm can replace part of the insects in species accepting it.

Adjusting portions

To assess the portion, compare the amount and type of food eaten with growth and body condition. Weekly weighing of juveniles and monthly weighing of adults helps follow the trend. Adjust the ration gradually when growth or reserves require it; reduce it if body condition indicates excess weight or leftovers remain. Investigate unexpected weight loss or abnormal swelling rather than addressing it only with more or less food.

Preparing and offering meals

Prepare insects during the 24–48 hours before feeding: keep them in their culture container with a complete feeder diet and safe hydration. Check access to food and water and remove spoiled leftovers. Then select feeders of the specified size and prepare only the batch to be offered. This step, called gut-loading, improves prey quality; bran or potato alone do not correct deficiencies.

At feeding time the prey should be easy to swallow. As an initial guide, choose insects no wider than the space between the eyes, then adapt size to the mouth and the animal’s response. Offering them individually or in an escape-resistant dish lets you see actual intake and remove leftovers.

Use clean equipment and water treated for chlorine and chloramine for tongs, bowls and rinsing; avoid soap residue. Offer near the animal without making it swallow substrate.

Calcium and vitamins

Immediately before feeding, lightly coat low-calcium insects with phosphorus-free calcium: they should remain visible, without clumps. Common insects often have an unfavourable calcium:phosphorus balance; rotating them alone does not correct it.

Choose one supplementation programme: plain calcium for ordinary meals and a species-appropriate multivitamin at its labelled feeding intervals. Record the product and its existing D3 and vitamin A; do not add a second dose to meals using a combined product. With measured UVB, agree the oral D3 provision; product concentrations are not interchangeable.

For amphibians choose a product appropriate for vitamin A as well; beta-carotene alone should not be considered equivalent in every species. Therapeutic vitamin A doses require a veterinarian.

Daily care

First days

Keep retreats accessible and observe without opening them to look for the animal. Check climate readings from outside, offer scheduled food and record actual intake. Prepare the scales and container before weighing so the transfer stays brief; compare weight with earlier records rather than relying on appearance alone.

Cleaning

Keep animals and equipment away from kitchens and food areas, use tools dedicated to each enclosure and wash your hands with soap and running water after handling animals, food, tank water or furnishings. Quarantine new arrivals separately and agree the duration and checks with a veterinarian before introducing them to established animals.

Handling

Handle the frog only when necessary, using powder-free gloves moistened with dechlorinated water.

Checks

Record weight, appetite and behaviour; consult a veterinarian experienced with the species if changes persist. For laboured breathing or wounds, contact them promptly without waiting for symptoms to persist.

Breeding

Sex, maturity and readiness

For females consider at least two years as a maturity reference alongside growth and body condition. Male calls and nuptial pads aid sexing; an early-calling male does not make a young female ready.

Start a record for each breeding animal with identity, origin, documented age and previous weights. Compare the weight trend with growth and body condition; delay introductions for animals still growing rapidly, losing weight or recently acquired. Use stated ages as guidance alongside these checks. If sex cannot be identified reliably, obtain assessment by qualified personnel before pairing.

Preparation and seasonal cycle

Prepare a gradual seasonal transition and a separate rain chamber with a guarded pump, emerged supports and manageable drainage. This is temporary breeding housing: return adults to their terrarium after spawning.

Before encounters, prepare and test offspring enclosures and have first foods available. Check records for regular adult feeding and good body condition, then verify access from exposed areas to retreats. If the species protocol includes seasonal changes, adjust settings gradually and record the response. Record night-time air, surface and egg temperatures separately, noting where each is measured. Keep water available throughout preparation.

Courtship and mating

Calling precedes amplexus; fertilisation occurs externally as eggs are released. Observe without handling the pair and leave supports reachable while both animals are clasped. Reduce competition if other males continually disturb them.

Spawning and egg collection

Clutches may contain hundreds or thousands of eggs. Provide aquatic plants and calm water, separate adults after spawning and distribute tadpoles among tanks according to system capacity rather than nominal volume alone.

Aquatic development and hatching

A system using 28–29 °C water and hatching in about 1–3 days is documented. Metamorphosis varies substantially with conditions and density: follow limb appearance and tail absorption rather than raising heat to meet a date.

Use water treated for chlorine and chloramine at the same temperature as the original container. Guard intakes and keep movement gentle. Check eggs and water daily, remove dead material without breaking healthy eggs, siphon leftovers and faeces, test ammonia and nitrite and change water with prepared water as needed.

First meals and juvenile care

Start feeding when tadpoles swim and search for food, using suitable omnivorous tadpole food in small portions and removing leftovers. At forelimb emergence provide a continuous ramp out of water. After metamorphosis switch to supplemented microinsects, low climbing supports and similar-sized groups.

Observe each larva’s feeding, growth and developmental stage daily, avoiding unnecessary capture for weighing. Also check water quality, injuries and size differences: a feeding group does not establish that every larva eats. Separate injured individuals or those excluded from food, and adjust space and diet as they develop. For forms that become terrestrial, prepare gentle exits and shelters before the transition to land.

Female recovery

After reproduction provide water and the usual balanced diet, initially in manageable portions; monitor weight, activity and return of appetite. Keep supplements and lighting consistent with the feeding guide. Avoid further introductions until the previous condition has recovered; later clutches may occur without another mating. Persistent straining, weakness or protruding tissue require veterinary attention, without squeezing the abdomen.

Equipment and example diary

Prepare rearing tanks, covers, a mature sponge filter or containers for regular water changes, water tests, a narrow siphon, thermometer and productive first-food cultures. The number of offspring raised must match the actual capacity to feed them and maintain clean water.

A consistent diary using actual dates helps follow reproduction in Litoria caerulea. Start with adult identity, weight and condition, then record observed encounters, laying or birth and development conditions. After emergence record the first meal actually accepted and each youngster’s growth while continuing to follow female recovery. Over time these records help identify your lineage’s pattern without turning approximate durations into deadlines.