Trinket snake (Coelognathus helena)
Photo: Arupananda Rao / CC BY-SA 4.0 · via Wikimedia Commons

Reptile · Rat snake

Trinket snake care guide

Coelognathus helena

Intermediate

The trinket snake is a intermediate-level rat snake from India, Sri Lanka. Adults reach 90–150 cm and live 10–15 years in captivity. Rare in the trade; provide plenty of cover. Solitary.

  • Enclosure 120 × 60 × 60 cm
  • Temp Warm 28–31°C, cool 24°C
  • Humidity 50–70%

How much does a trinket snake cost in Canada?

Animal$200–500Typical captive-bred price
Bioactive enclosure$860–1570Enclosure $470–890 · equipment $190–420 · bioactive supplies ≈ $220
Yearly upkeep$150–300Food, supplements, bulbs, power, vet fund
First year total$1210–2370All prices CAD, estimates

Trinket snake quick facts

Skill level
Intermediate
Adult size
90–150 cm
Lifespan
10–15 years
Activity
Diurnal
Native range
India, Sri Lanka
Minimum enclosure
120 × 60 × 60 cm (47 × 24 × 24 in, ≈ 114 US gal)
Housing
Best kept alone.
Temperature
Warm 28–31°C, cool 24°C
Humidity
50–70%
UVB
Recommended
Diet
Carnivore – frozen/thawed mice
Bioactive style
Temperate forest

Trinket snake enclosure & bioactive setup

Give one adult at least 120 × 60 × 60 cm (47 × 24 × 24 inches). Best kept alone. This species suits a temperate forest bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix10 cm

Keep a moisture gradient: drier on top and at the warm end, slightly moist underneath and at the cool end.

Temperature: Warm 28–31°C, cool 24°C. Humidity: 50–70%. UVB: Recommended.

What does a trinket snake eat?

Carnivore – frozen/thawed mice. Feed one appropriately sized thawed mouse every 7–10 days.

Handling, temperament & health

Defensive at first; settles in captive-bred animals.

Health watch: Watch for respiratory infections and stress.

Cleaning & maintenance schedule

Daily

  • Check temperatures and refresh water.

Weekly

  • Lightly moisten the cool end and lower soil.
  • Spot-clean waste.

Monthly

  • Top up leaf litter; check hides and branches are stable.

Yearly

  • Partially refresh soil in high-traffic areas.
  • Replace UVB bulbs (if used).

Recommended for a trinket snake bioactive

Quantities are for one minimum-size enclosure (120 × 60 × 60 cm).

Trinket snake FAQ

Is the trinket snake good for beginners?

The trinket snake is best for keepers with some experience (intermediate). Defensive at first; settles in captive-bred animals.

What size enclosure does a trinket snake need?

At least 120 × 60 × 60 cm (about 47 × 24 × 24 inches, roughly 114 US gallons) for one adult. Best kept alone.

How much does a trinket snake cost in Canada?

Typically $200–500 CAD to buy, about $860–1570 CAD for a complete bioactive enclosure, and $150–300 CAD a year to keep.

What temperature and humidity does a trinket snake need?

Temperature: Warm 28–31°C, cool 24°C. Humidity: 50–70%.

What does a trinket snake eat?

Carnivore – frozen/thawed mice. Feed one appropriately sized thawed mouse every 7–10 days.

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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.