Reptoria

Ionides' white-throated monitor (Varanus albigularis ionidesi)

Ionides' white-throated monitor (Varanus albigularis ionidesi), typical appearance of the species

Monitors & tegus · Difficulty: Expert

Key facts and care guidance for Ionides' white-throated monitor (Varanus albigularis ionidesi) (origin: Tanzania (East Africa); the black-throated monitor form from dry savannah and bushland). Adult size around approx. 1.2–1.8 m (up to ~2 m) including the tail, very bulky. Life expectancy up to 20–25 years. The values below are carefully researched guidance.

Short answers

Ionides' white-throated monitor: How big does the enclosure need to be?

300×150×150 cm (at least 8×4×4 ft) for one adult animal.

Ionides' white-throated monitor: What temperature does it need?

Daytime 28–35 °C, basking spot 45–50 °C, at night 22–25 °C.

Ionides' white-throated monitor: Does it need UVB lighting?

UVB: UVB needed (Ferguson zone 2–3, UV index 3–5; a savannah species).

Ionides' white-throated monitor: How long do they live?

Life expectancy: up to 20–25 years.

Ionides' white-throated monitor: Is it suitable for beginners?

No – better suited to experienced keepers (difficulty: Expert).

Climate

Daytime temperature
28–35 °C
Night temperature
22–25 °C
Basking spot
45–50 °C
Humidity
50–70 %
UVB
UVB needed (Ferguson zone 2–3, UV index 3–5; a savannah species)

Enclosure

Minimum size
300×150×150 cm (at least 8×4×4 ft) for one adult animal
Substrate
A deep, diggable sand-loam mix (compactable for caves), a large water basin

Feeding

Food
Rodents (mice or rats), chicks, large insects or roaches, snails, eggs
Feeding interval
adults 1–2×/week (risk of obesity!), juveniles more often

Key facts

Adult size
approx. 1.2–1.8 m (up to ~2 m) including the tail, very bulky
Life expectancy
up to 20–25 years
Origin
Tanzania (East Africa); the black-throated monitor form from dry savannah and bushland
Protection status
CITES Appendix II / EU Annex B – proof of origin required
Brumation
Not essential (reduced activity or aestivation is possible in the dry season)
Cohabitation
Single housing – territorial; never males together. The reason is territory: two animals will not voluntarily share a basking spot or a hiding place. They fight until one is seriously injured or permanently confined to a corner — and that second animal then eats worse, without showing any visible wound.

Notes

The black-throated monitor, one of the heaviest monitors. Very powerful and potentially dangerous. The commonest mistake: overfeeding and obesity, and an enclosure that is too small and unstructured. It needs deep, diggable substrate.

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Related species

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What you need to start

To keep Ionides' white-throated monitor (Varanus albigularis ionidesi) you typically need: a suitable enclosure (300×150×150 cm (at least 8×4×4 ft) for one adult animal), substrate (A deep, diggable sand-loam mix (compactable for caves), a large water basin), a heat source with a thermostat, UVB lighting, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.

The complete, interactive care database is in the Reptoria app.

Last updated: 9 October 2026 · Editor: Reptoria editorial team · Sources include: https://en.wikipedia.org/wiki/Black-throated_monitor, https://reptile-database.reptarium.cz/species?genus=Varanus&species=albigularis

All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).