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AmphibianTerrestrialIntermediate
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Marbled Rubber Frog
Phrynomantis annectens
A colorful terrestrial microhylid frog (3.0 cm) native to Southwestern Africa (Namibia, South Africa). Characterized by its rubbery skin texture, bright toxic warnings, and walking locomotion.
Class:Amphibia
Order:Anura
Family:Microhylidae
Subfamily:Phrynomerinae
Genus:Phrynomantis
Species:Phrynomantis annectens
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Environment
Terrestrial
Humidity
55 - 75 %
Day temperature
24 - 26 °C
Night temperature
20 °C
Ambient temperature
24 - 26 °C
Minimum enclosure
>= 45 L
UVB
Low
Species description
Geographical Origin and Habitat: Distributed across the dry savannas and shrublands of Southwestern Africa (Namibia, South Africa). It seeks shelter in rock crevices, abandoned burrows, and under fallen logs. They are adapted to survive in areas with limited rainfall, relying on seasonal water sources. They burrow underground during dry spells and emerge with the first rains.
Taxonomy and Genetics: Family Microhylidae, genus Phrynomantis. Commonly called rubber frogs due to the distinct smooth, flexible, and rubbery texture of their skin. The genus Phrynomantis is unique among microhylids for its specialized skin structure. Their secretions contain toxic chemical defenses against common predators.
Behavior and Habits: Terrestrial and nocturnal. It moves by walking or running rapidly across the ground rather than hopping, showing unique cursorial locomotion. When threatened, they inflate their bodies to look larger and secrete a white, irritating fluid. They move primarily by walking, which saves energy compared to jumping.
Morphology: Elongated body (about 3.0 cm) with shiny, elastic skin colored in dark tones with striking red, orange, or golden spots. Females are slightly larger. Their small head and narrow mouth are specialized for feeding on ants and termites. The bright red or orange markings contrast sharply with their dark body color.
Care, breeding and tankmates
Terrarium Setup: Needs a semi-arid terrarium (minimum 50x30x30 cm) with a substrate of coconut fiber and dry leaves. Add tubular cork bark and flat stones for hides. Provide a thick layer of leaf litter to mimic the natural debris of their native habitat. Cork bark tubes and flat slate stones can create ideal caves.
Lighting and Heating: Keep daytime temperatures at 24-26 °C and night temperatures at 20 °C. Provide a 12-hour light cycle with low-output UVB lighting. Keep the enclosure away from drafty areas or air conditioning vents to maintain stable temperatures. Use a low-wattage heat source if necessary.
Humidity and Hydration: Maintain moderate humidity levels (55-75%). Supply a fresh, shallow water dish. Mist a corner of the enclosure lightly every other day. A digital hygrometer is recommended to accurately monitor humidity levels within the terrarium. Ensure the substrate is moist but not muddy.
Feeding and Supplementation: Feed gut-loaded live insects (crickets, flies, roaches). Supplement prey with calcium and vitamin D3 powder twice a week. Ensure the insects fed are small enough to prevent choking, as they have narrow throats. Dust prey items with calcium and D3 powders.
Compatibility: Best housed in a species-specific setup. Males can be territorial; keep small groups only in spacious enclosures with plenty of hiding spots. Keep them only with similarly sized members of their own species to prevent accidental injury. Do not mix with other frog species due to skin secretions.
Health and Common Diseases: Skin produces toxic secretions when stressed. Always handle with gloves and wash hands thoroughly to prevent irritation to eyes or skin. Ensure proper ventilation to prevent respiratory issues and skin infections caused by stagnant air. Always wear gloves when handling this species.
Geographic Origin and Distribution
Distributed across the dry savannas and shrublands of Southwestern Africa (Namibia, South Africa). It seeks shelter in rock crevices, abandoned burrows, and under fallen logs. They are adapted to survive in areas with limited rainfall, relying on seasonal water sources. They burrow underground during dry spells and emerge with the first rains.
Origin
North AmericaAfrica and Madagascar
Amphibian profile
- Diet
- No verified data available
- Life expectancy
- No verified data available
- Adult size
- 4 cm
- Lifestyle/Microhabitat
- No verified data available
- Activity cycle
- No verified data available
- Sociality
- No verified data available
- Reproduction
- No verified data available
- Toxicity
- No verified data available
- Life stage
- No verified data available
- Handling tolerance
- No verified data available
- Brumation
- No verified data available
- Molting
- No verified data available
The catalog's scalar value is 4 cm. The AmphiBIO v1 source reports a maximum adult measurement of 4 cm for this species, recorded as snout–vent length (SVL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
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