Reptile · Colubrid
Plain-bellied water snake care guide
Nerodia erythrogaster
The plain-bellied water snake is a intermediate-level colubrid from Central and SE United States. Adults reach 75–120 cm and live 10–15 years in captivity. More terrestrial than other Nerodia; still needs a large water dish. Solitary.
- Enclosure 120 × 60 × 60 cm
- Temp Warm 28–30°C, cool 22°C
- Humidity 60–80%
How much does a plain-bellied water snake cost in Canada?
Plain-bellied water snake quick facts
- Skill level
- Intermediate
- Adult size
- 75–120 cm
- Lifespan
- 10–15 years
- Activity
- Diurnal
- Native range
- Central and SE United States
- Minimum enclosure
- 120 × 60 × 60 cm (47 × 24 × 24 in, ≈ 114 US gal)
- Housing
- Best kept alone.
- Temperature
- Warm 28–30°C, cool 22°C
- Humidity
- 60–80%
- UVB
- Recommended
- Diet
- Piscivore – fish, frogs, scented mice
- Bioactive style
- Semi-aquatic (paludarium)
Plain-bellied water snake enclosure & bioactive setup
Give one adult at least 120 × 60 × 60 cm (47 × 24 × 24 inches). Best kept alone. This species suits a semi-aquatic (paludarium) bioactive build.
- Leaf litter2 cm
- Jurassic ABG Terrarium Mix8 cm
- Drainage – clay bio balls4 cm
Quantities assume about half the floor is land. The water half needs a filter and regular partial water changes.
Temperature: Warm 28–30°C, cool 22°C. Humidity: 60–80%. UVB: Recommended.
What does a plain-bellied water snake eat?
Piscivore – fish, frogs, scented mice. Feed every 5–7 days.
Handling, temperament & health
Defensive at first; some settle well.
Health watch: Watch for blister disease and thiamine deficiency.
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 plain-bellied water snake bioactive
Quantities are for one minimum-size enclosure (120 × 60 × 60 cm).
Clay Bio Balls
Drainage layer, 4 cm
Jurassic ABG Terrarium Mix
Bioactive soil layer, 8 cm
Almond Leaves Dried 15/Pack
Leaf litter – food and cover for the clean-up crew
Fresh Sphagnum Moss Container
Moss for humidity pockets and planting
Malaysian Drift Wood
Bridges water and land; easy exit from the water
Cork Bark Flats
Shelter on the land section
Plain-bellied water snake FAQ
Is the plain-bellied water snake good for beginners?
The plain-bellied water snake is best for keepers with some experience (intermediate). Defensive at first; some settle well.
What size enclosure does a plain-bellied water 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 plain-bellied water snake cost in Canada?
Typically $60–150 CAD to buy, about $840–1550 CAD for a complete bioactive enclosure, and $200–350 CAD a year to keep.
What temperature and humidity does a plain-bellied water snake need?
Temperature: Warm 28–30°C, cool 22°C. Humidity: 60–80%.
What does a plain-bellied water snake eat?
Piscivore – fish, frogs, scented mice. Feed every 5–7 days.
Similar species
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.