Keeper guide

Blue Fang Skeleton Temperature Guide — Ephebopus cyanognathus

A practical temperature range for Ephebopus cyanognathus, commonly known as the Blue Fang Skeleton, is 22–26°C. Stable room conditions matter more than chasing tiny changes on the thermometer.

At a glance

Quick facts

World
New World
Origin
French Guiana
Lifestyle
Fossorial
UK hobby rarity
Uncommon
Maximum size
About 12–14 cm (4.75–5.5 in)
Growth rate
Fast
Male lifespan
Roughly 3–4 years
Female lifespan
Often 10–12 years
Temperament
Fast, secretive and defensive when exposed
Venom
Venomous; not usually treated as medically significant, but bites should be avoided; this genus has urticating setae on the pedipalps
Temperature
22–26°C
Moisture / humidity
Moisture-retentive lower substrate with good airflow and a water dish
CITES
Check current CITES rules before cross-border trade

Working temperature range

Keep Ephebopus cyanognathus around 22–26°C. Use that as a practical captive range and avoid prolonged exposure to temperatures well outside it.

Blue Fang Skeletons do not need the enclosure to hit one exact number all day. Normal small room fluctuations are easier to manage than repeated heating and cooling adjustments.

Measure the shelf, not just the room

Check the temperature where the Ephebopus cyanognathus enclosure actually sits. Shelves near windows, radiators, computers or external walls can differ from the centre of the room.

A thermometer placed near the enclosure gives more useful information for a Blue Fang Skeleton than a reading taken across the room.

Avoid direct heat on the enclosure

Do not attach a heat mat directly to an Ephebopus cyanognathus enclosure. Small containers can develop concentrated hot areas that are much warmer than the surrounding room.

If the room is genuinely too cold for Blue Fang Skeletons, warm the room instead and check the temperature at enclosure level. That gives a more even and controllable result.

Summer heat

During hot weather, keep Ephebopus cyanognathus out of direct sunlight and watch rooms that heat up during the afternoon. A closed window area can become much warmer than expected.

Do not respond to a warm day by soaking the Blue Fang Skeleton enclosure. Temperature and substrate moisture are separate husbandry issues.

Winter conditions

In winter, check the coldest part of the day where Ephebopus cyanognathus is kept. Rooms can cool overnight even when daytime readings look comfortable.

If room heating is used, remember that it may also dry Blue Fang Skeletons enclosures faster. Adjust watering to the actual drying rate rather than assuming winter always means wetter substrate.

Use behaviour as context

Temperature readings for Ephebopus cyanognathus should be considered alongside normal feeding, retreat use and moulting. One slightly different reading is less useful than a consistent pattern over time.

If a Blue Fang Skeleton suddenly changes behaviour, check temperature along with water, moisture and recent disturbance instead of assuming temperature is the only cause.