Reptoria

Giant isopod (Porcellio hoffmannseggi)

Giant isopod (Porcellio hoffmannseggi) in a terrarium

Invertebrates · Difficulty: Beginner to intermediate

Key facts and care guidance for Giant isopod (Porcellio hoffmannseggi) (origin: The Iberian Peninsula (Spain, Portugal), North Africa). Adult size around 3–4 cm (one of the largest isopod species). Life expectancy 2–4 years. The values below are carefully researched guidance.

Short answers

Giant isopod: How big does the enclosure need to be?

A box of ~30 x 20 cm or larger, good ventilation.

Giant isopod: What temperature does it need?

Daytime 20–27 °C.

Giant isopod: Does it need UVB lighting?

UVB: No.

Giant isopod: How long do they live?

Life expectancy: 2–4 years.

Giant isopod: Is it suitable for beginners?

Partly – manageable with some prior knowledge (difficulty: Beginner to intermediate).

Climate

Daytime temperature
20–27 °C
Night temperature
—
Basking spot
—
Humidity
50–70 % with a dry zone
UVB
No

Enclosure

Minimum size
a box of ~30 x 20 cm or larger, good ventilation
Substrate
A soil or coco humus and sand mix, ~10 cm, with leaf litter and wood

Feeding

Food
Leaf litter, white-rotted wood, vegetables, protein regularly, calcium
Feeding interval
top up 1–2×/week

Key facts

Adult size
3–4 cm (one of the largest isopod species)
Life expectancy
2–4 years
Origin
The Iberian Peninsula (Spain, Portugal), North Africa
Protection status
—
Brumation
None
Cohabitation
Keep as a colony; do not mix with slow small isopods (outcompetes them). These animals naturally live in groups. One colony per enclosure. When protein is lacking, moulting animals get nibbled by their own kind, so offer protein regularly.

Notes

The "titan" isopod, very large. It needs good ventilation, a dry zone plus a damp retreat corner, and regular protein.

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Related species

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What you need to start

To keep Giant isopod (Porcellio hoffmannseggi) you typically need: a suitable enclosure (a box of ~30 x 20 cm or larger, good ventilation), substrate (A soil or coco humus and sand mix, ~10 cm, with leaf litter and wood), a heat source with a thermostat, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.

The complete, interactive care database is in the Reptoria app.

Last updated: 24 September 2026 · Editor: Reptoria editorial team · Sources include: garnelio.de, insektenliebe.com, lovelyinsects.com, terraristikladen.de, world-of-isopods.de

All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).