Reptilia · Squamata
Varanus jobiensisAhl, 1932
Peach-throated Monitor
Photograph placed in the public domain, CC0, via iNaturalist
A day-active, meat-eating monitor lizard from the Australo-Pacific region, reaching 451 mm snout to vent.
Once published as Varanus karlschmidtii — those names reach this page.
Reptilia › Squamata › Varanidae › Varanus
- Grows to
- 451mm
- greatest recorded
- Eats
- Carnivorous
- Active
- Diurnal
- Lives up to
- 17.4years
Longer than only 46% of all monitor lizards anyone has measured.
The bar is the rank itself: its length is the share of the family this animal exceeds. The chart below is the family’s real spread, on a logarithmic scale because body length here runs from 116.4 to 1,570 mm. The solid rule is this animal. Every bar is a count of real species, and nothing on this figure is estimated.
What is known
33 sourced facts, each taken from a named scientific dataset. How to read these.
Cited from a dataset unless a row is marked otherwise.
Standing in the world
- Still living
- Extant
- Conservation status
- Least Concern
- Status assessed · the year the Red List last looked
- 2014
The animal itself
- Limbs
- Four legs
- Fangs
- None
- Longest recorded life
- 17.4years
Myhrvold, Baldridge, Chan, Sivam, Freeman, and Ernest, 2015, Ecology, 96:3109-3109
Size
- Length snout to vent · greatest recorded
- 451mm18 in
- Hatchling length · snout to vent
- 100mm4 in
- Largest juvenile · snout to vent
- 90.5mm3.5 in
- Body mass · greatestcomputed
- 1928.7g4.3 lb
- Body mass · adult female, meanmeasured
- 1021g2.3 lb
max 451 mm SVL (Feldman et al. 2016)
computed from length by a family-level allometric equation, not weighed
How it lives
- Diet
- Carnivorous
- Active
- Diurnal
- Where it lives
- Arboreal, terrestrial
- Habitat
- Forest
- Biome
- Tropical & Subtropical Moist Broadleaf Forests
- Region
- Australo-Pacific
- Mainland or island
- Found only on islands
- Highest it lives · above sea level
- 800m
- Range size
- 494,060km²
Arthropods frogs and eggs (e.g., Philipp et al. 2007), invertebrates and amphibians (Arbuckle 2009), "feeds mainly on insects next to frogs and reptile eggs." (Auliya and Koch 2020)
e.g., Auliya and Koch 2020
Arboreal and terrestrial (Philipp and Philipp 2007, Auliya and Koch 2020)
Breeding
- Reproduction
- Oviparous
- Sex decided by
- Genes, ZW/ZZ
- Average clutch
- 3.63eggs
- Eggs or young per clutch
- 2–6eggs
- Mean clutch
- 3.25–4eggs
- Clutches a year
- 4per year
3-5 (Auliya and Koch 2020)
Naming and history
- Suborder
- Sauria
- Infraorder
- Anguimoprha
- Subspecies
- No
- Described by
- Ahl
- Moved to another genus · since it was first described
- No
- Described in
- 1932
- Type locality
- Indonesia
Keeping one
5 ft 11 in × 5 ft 11 in × 5 ft 11 in(180 × 180 × 180 cm)
Minimum length × width × height, for one animal. Bigger is always better.
The standard sizes ground species at 4 × 4 × 2.5 and climbing species at 4 × 2.5 × 4 times snout-vent length.
Recorded both on the ground and climbing, so this is the larger of the two rules in every dimension.
Mindestanforderungen an die Haltung von Reptilien (Sachverständigengutachten), German Federal Ministry for Nutrition, Agriculture and Forestry, Animal Welfare Division, 10 January 1997. The standard states these floor areas are recommendations rather than binding limits.
From this animal’s own snout-vent length of 18 in (451 mm), at 4 × 4 × 4 times it, following the German federal welfare standard — how this is worked out.
No preferred body temperature has been recorded for Peach-throated Monitor. Rather than repeat a number from a care sheet, this page leaves it out.
Feeding
A prey item should be no wider than the space between the animal's eyes.
Widely used across reptile husbandry references. The stated reason is that the gap approximates the width of the throat, so wider prey is associated with impaction. This is established practice, not a measurement.
163kJ per day
Worked out for an animal of 1,929 g, the heaviest recorded for Peach-throated Monitor — so it is the top of the range, not a figure for a particular animal. Weigh yours and the number will be lower.
An upper estimate, not a feeding target, and not veterinary advice. The equation covers only what an animal burns staying alive, so a growing, gravid or recovering animal needs more — and it was measured on wild animals, which move far more than one in an enclosure. Body condition and a vet who knows the species are what a feeding decision should rest on. Where this comes from.
What nobody knows
These are not gaps in our research. No scientific dataset records them for this species — and saying so is information you cannot get from a reference that simply leaves a field out.
- — Length snout to vent · adult female mean
- — Length snout to vent · adult male mean
- — Length snout to vent · adult mean
- — Length nose to tail · greatest recorded
- — Female length · mean, nose to tail
- — Length nose to tail · adult male mean
- — Length nose to tail · adult mean
- — Largest female · snout to vent
- — Largest male · snout to vent
- — Largest female · shell length
- — Largest male · shell length
- — Hatchling length · nose to tail
- — Largest juvenile · shell length
- — Egg length
- — Egg width
- — Body mass · a typical adult
- — Body mass at hatching
- — Preferred body temperature · chosen in a laboratory gradient
- — Body temperature when active · measured in the wild
- — Eats arthropods
- — Eats vertebrates
- — Eats plant matter
- — How it hunts
- — How the young develop
- — Gestation or incubation
- — Clutches in a year
- — First breeds from · youngest recorded
- — First breeds by · oldest recorded
- — Hatchling length · smallest recorded
- — Hatchling length · largest recorded
- — Age at first breeding · female
- — Mature from · youngest recorded
- — Mature by · oldest recorded
- — Size at maturity · smallest recorded
- — Size at maturity · largest recorded
- — Venomous
- — Body temp in the wild · lowest mean recorded
- — Body temp in the wild · highest mean recorded
- — Colour on the back
- — Pattern on the back
- — Pupil
- — Population trend
- — Red List criteria
- — Active season · shortest recorded
- — Active season · longest recorded
- — Density · lowest recorded
- — Density · highest recorded
- — Home range · largest recorded
- — Active in
- — Lowest it lives · above sea level
Others in Varanidae
Take this data
Everything on this page is available as data under CC BY 4.0 — use it freely, credit it, no permission needed.
This species as JSON · the whole dataset
Cite this page
The Reptile & Amphibian Encyclopedia (2026). Varanus jobiensis. Retrieved 2026-09-08, from https://www.allanglescreatures.com/species/varanus-jobiensis
@misc{varanus_jobiensis_2026,
title = {Varanus jobiensis},
author = {{The Reptile & Amphibian Encyclopedia}},
year = {2026},
url = {https://www.allanglescreatures.com/species/varanus-jobiensis}
}Sources
- Meiri, S. (2024). SquamBase — a database of squamate (Reptilia: Squamata) traits. Global Ecology and Biogeography. Public domain (CC0).
- Oskyrko, O. et al. (2024). ReptTraits: a comprehensive dataset of ecological traits in reptiles. Scientific Data. Used under CC BY 4.0.
- Catalogue of Life (dataset 3LR), used under CC BY.
- Moura, M. R. et al. TetrapodTraits: a database of 33,281 tetrapod species. Used under CC BY 4.0. Observed values only; this encyclopedia does not publish its imputed predictions.