Black tree monitor – Beccari (Varanus beccarii)
Monitors & tegus · Difficulty: Expert
Key facts and care guidance for Black tree monitor – Beccari (Varanus beccarii) (origin: The Aru and Misool Islands (the New Guinea region)). Adult size around approx. 80–95 cm (usually 50–60 cm). Life expectancy approx. 10–15 years. The values below are carefully researched guidance.
Short answers
Black tree monitor – Beccari: How big does the enclosure need to be?
From 125×60×120 cm for one animal; for a pair from 145×60×120 cm (15 % more floor space per additional animal, as in the 1997 expert report).
Black tree monitor – Beccari: What temperature does it need?
Daytime 28–32 °C, basking spot 40–50 °C, at night 22–24 °C.
Black tree monitor – Beccari: Does it need UVB lighting?
UVB: Recommended.
Black tree monitor – Beccari: How long do they live?
Life expectancy: approx. 10–15 years.
Black tree monitor – Beccari: Is it suitable for beginners?
No – better suited to experienced keepers (difficulty: Expert).
Climate
- Daytime temperature
- 28–32 °C
- Night temperature
- 22–24 °C
- Basking spot
- 40–50 °C
- Humidity
- 75–85 %
- UVB
- Recommended
Enclosure
- Minimum size
- from 125×60×120 cm for one animal; for a pair from 145×60×120 cm (15 % more floor space per additional animal, as in the 1997 expert report)
- Substrate
- Deep humus or coco substrate; branches, climbing walls, cork tubes
Feeding
- Food
- Insects (crickets, roaches), occasionally nestlings or eggs
- Feeding interval
- 2–3× a week
Key facts
- Adult size
- approx. 80–95 cm (usually 50–60 cm)
- Life expectancy
- approx. 10–15 years
- Origin
- The Aru and Misool Islands (the New Guinea region)
- Protection status
- CITES Appendix II / EU Annex B, registration required; proof of legal origin
- Brumation
- None
- Cohabitation
- Singly or as a compatible pair. The reason: several males fight over territory and the warm spot until one is injured or spends its life in a corner. Females usually get on, but each needs its own warm spot and hide; feed them separately once they differ in size.
Notes
A shy, very active tree monitor of the prasinus group; it needs a tall, humid and densely structured terrarium. An expert's animal.
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Black tree monitor – Beccari (Varanus beccarii) currently offered
- Varanus Beccari /Schwarzer Baumwaran – Köln · 1,250 €
Related species
- Argus monitor (Varanus panoptes) – Expert
- Bengal monitor (Varanus bengalensis) – Expert
- Blue tree monitor (Varanus macraei) – Expert
- Blue-tailed monitor (Varanus doreanus) – Intermediate to expert
- Finsch's monitor (Varanus doreanus finschi) – Expert
- Boatsi tree monitor (Varanus boatsi) – Expert
- Bogert's tree monitor (Varanus bogerti) – Expert
- Lace monitor (Varanus varius) – Expert
What you need to start
To keep Black tree monitor – Beccari (Varanus beccarii) you typically need: a suitable enclosure (from 125×60×120 cm for one animal; for a pair from 145×60×120 cm (15 % more floor space per additional animal, as in the 1997 expert report)), substrate (Deep humus or coco substrate; branches, climbing walls, cork tubes), 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: 30 October 2026 · Editor: Reptoria editorial team · Sources include: monster-reptiles.com, reptile-care.de, warane.jimdofree.com, zootier-lexikon.org, einrichtungsbeispiele.de
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).