Nile monitor (Varanus niloticus)
Photo: Charles J. Sharp / CC BY-SA 4.0 · via Wikimedia Commons

Reptile · Monitor

Nile monitor care guide

Varanus niloticus

ExpertCITES – buy captive-bredMay need a permitVery large adult

The nile monitor is a expert-level monitor from Sub-Saharan Africa. Adults reach 150–200 cm and live 15–20 years in captivity. Room-sized enclosure with a pool; rarely tames.

  • Enclosure 360 × 180 × 180 cm
  • Temp Basking 50°C+, ambient 28°C
  • Humidity 60–80%

How much does a nile monitor cost in Canada?

Animal$80–250Typical captive-bred price
Bioactive enclosure$12390–22460Enclosure $10580–19990 · equipment $210–450 · bioactive supplies ≈ $1690
Yearly upkeep$1200–2500Food, supplements, bulbs, power, vet fund
First year total$13670–25210All prices CAD, estimates

Nile monitor quick facts

Skill level
Expert
Adult size
150–200 cm
Lifespan
15–20 years
Activity
Diurnal
Native range
Sub-Saharan Africa
Minimum enclosure
360 × 180 × 180 cm (142 × 71 × 71 in, ≈ 3082 US gal)
Housing
Best kept alone.
Temperature
Basking 50°C+, ambient 28°C
Humidity
60–80%
UVB
Required
Diet
Carnivore – fish, crayfish, whole prey, eggs
Bioactive style
Semi-aquatic (paludarium)

Nile monitor enclosure & bioactive setup

Give one adult at least 360 × 180 × 180 cm (142 × 71 × 71 inches). Best kept alone. This species suits a semi-aquatic (paludarium) bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix12 cm
  3. Base layer – packed coco fibre18 cm
  4. Drainage – clay bio balls4 cm

Quantities assume about half the floor is land. The water half needs a filter and regular partial water changes. This species digs, so give it 30 cm (12 in) of substrate in total. Only the top 12 cm needs to be bioactive soil; the 18 cm underneath can be cheaper coco fibre, dampened and packed firm.

Temperature: Basking 50°C+, ambient 28°C. Humidity: 60–80%. UVB: Required.

Some Canadian provinces and many municipalities restrict or ban this species. Check your local bylaws and any provincial permit rules before buying.

What does a nile monitor eat?

Carnivore – fish, crayfish, whole prey, eggs. Juveniles daily, adults 2–3 times a week.

Handling, temperament & health

Very defensive and fast; experts only.

Health watch: Obesity and injuries.

Cleaning & maintenance schedule

Daily

  • Check water and air temperature; feed according to species.

Weekly

  • Change 20–30% of the water with dechlorinated water.
  • Rinse filter sponge in old tank water (never tap water) as needed.

Monthly

  • Top up leaf litter on land; prune plants at the waterline.

Yearly

  • Service the pump/filter fully.

Recommended for a nile monitor bioactive

Quantities are for one minimum-size enclosure (360 × 180 × 180 cm).

Nile monitor FAQ

Is the nile monitor good for beginners?

No – the nile monitor is a specialist animal for expert keepers only. Very defensive and fast; experts only.

What size enclosure does a nile monitor need?

At least 360 × 180 × 180 cm (about 142 × 71 × 71 inches, roughly 3082 US gallons) for one adult. Best kept alone.

How much does a nile monitor cost in Canada?

Typically $80–250 CAD to buy, about $12390–22460 CAD for a complete bioactive enclosure, and $1200–2500 CAD a year to keep.

What temperature and humidity does a nile monitor need?

Temperature: Basking 50°C+, ambient 28°C. Humidity: 60–80%.

What does a nile monitor eat?

Carnivore – fish, crayfish, whole prey, eggs. Juveniles daily, adults 2–3 times a week.

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This care sheet is general guidance from One Bioactive, not veterinary advice. Needs vary with age, locality and individual animals – confirm with your breeder and an exotics vet. Prices are typical Canadian ranges in CAD and change over time.