European nightcrawler (Eisenia hortensis)
Photo: Trevor Reid / CC BY-SA 4.0 · via Wikimedia Commons

Invertebrate · Other invertebrate

European nightcrawler care guide

Eisenia hortensis

Beginner

The european nightcrawler is a beginner-level other invertebrate from Europe. Adults reach Body 7–15 cm and live 2–5 years in captivity. Aerates bioactive soil and makes a good feeder; avoid in very hot setups.

  • Enclosure 30 × 20 × 20 cm
  • Temp 15–24°C
  • Humidity 70–90%

How much does a european nightcrawler cost in Canada?

Animal$15–30Typical captive-bred price
Bioactive enclosure$100–170Enclosure $30–60 · equipment $20–40 · bioactive supplies ≈ $60
Yearly upkeep$10–20Food, supplements, bulbs, power, vet fund
First year total$130–220All prices CAD, estimates

European nightcrawler quick facts

Skill level
Beginner
Adult size
Body 7–15 cm
Lifespan
2–5 years
Activity
Nocturnal
Native range
Europe
Minimum enclosure
30 × 20 × 20 cm (12 × 8 × 8 in, ≈ 3 US gal)
Housing
A colony species – best kept in a group.
Temperature
15–24°C
Humidity
70–90%
UVB
Not needed
Diet
Detritivore – decaying leaves, vegetable scraps, castings
Bioactive style
Invertebrate colony

European nightcrawler enclosure & bioactive setup

Give one adult at least 30 × 20 × 20 cm (12 × 8 × 8 inches). A colony species – best kept in a group. This species suits a invertebrate colony bioactive build.

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

Leaf litter is food here, not decoration – keep a thick layer topped up. Keep one side damper than the other.

Temperature: 15–24°C. Humidity: 70–90%. UVB: Not needed.

What does a european nightcrawler eat?

Detritivore – decaying leaves, vegetable scraps, castings. Add vegetable scraps or leaf litter weekly.

Handling, temperament & health

Harmless and easy to handle.

Health watch: Overheating above 27°C and waterlogged soil kill worms.

Cleaning & maintenance schedule

Daily

  • Nothing needed most days.

Weekly

  • Mist the damp side; add vegetables or protein food in small amounts and remove leftovers after 24–48 h.

Monthly

  • Top up leaf litter and add a calcium source (cuttlebone).
  • Thin out the colony or split it if it gets crowded.

Yearly

  • Replace about a third of the soil, which turns into frass over time.

Recommended for a european nightcrawler bioactive

Quantities are for one minimum-size enclosure (30 × 20 × 20 cm).

European nightcrawler FAQ

Is the european nightcrawler good for beginners?

Yes – the european nightcrawler is a good choice for beginners. Harmless and easy to handle.

What size enclosure does a european nightcrawler need?

At least 30 × 20 × 20 cm (about 12 × 8 × 8 inches, roughly 3 US gallons) for one adult. A colony species – best kept in a group.

How much does a european nightcrawler cost in Canada?

Typically $15–30 CAD to buy, about $100–170 CAD for a complete bioactive enclosure, and $10–20 CAD a year to keep.

What temperature and humidity does a european nightcrawler need?

Temperature: 15–24°C. Humidity: 70–90%.

What does a european nightcrawler eat?

Detritivore – decaying leaves, vegetable scraps, castings. Add vegetable scraps or leaf litter weekly.

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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.