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Theraphosidae

Electric Blue Tarantula

Chilobrachys natanicharum (ex trade name Chilobrachys sp. 'Electric Blue' / 'Vietnam Blue')
บึ้งประกายสายฟ้า
AdvancedHuman-verified sheet

Temperature

24–28°Ambient

One ambient band, 24–28°C. This sheet states no warm side, no cool side and no night figure, so none are shown.

Humidity

70–80%Target RH
Check your setup against this sheet
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The numbers

Enclosure
25 × 25 × 30 cm
Diet
Crickets, roaches, locusts; occasional superworm · Slings 2–3×/week; juveniles ~weekly; adults every 7–14 days
Temperature
24–28°C (75–82°F)
Humidity
70–80%

Identity

Order / Family
Araneae
IUCN / CITES
Not formally evaluated (IUCN); not CITES-listed; wild population localised
Difficulty
Advanced
Commonality
Increasingly common – captive-bred; famous Thai native since its 2023 description
Adult size
Body ~6 cm; leg span ~13–15 cm
Lifespan
Females ~12–14 yr; males ~3–4 yr
Growth rate
Fast
Activity & niche
Fossorial/arboreal-tolerant burrower; in mangroves uses tree hollows; heavy webber
Temperament
Fast and defensive; skittish, quick to retreat or threat-pose
Venom / defense
No urticating hairs; potent (medically significant) venom – experts only; fast and defensive
Price (THB)
1,000–4,000 ฿ (size-dependent)

Enclosure and conditions

Temperature
24–28°C (75–82°F)
Humidity
70–80%
Min. enclosure
Adult ~25×25×30 cm; deep substrate plus a vertical hollow/cork option
Substrate
12–18 cm moist coco fibre/topsoil; tolerates burrow or elevated retreat
Hides / decor / water
Cork tube/hollow, starter burrow, water dish; heavy webbing expected

Diet

Staple food
Crickets, roaches, locusts; occasional superworm
Feeding frequency
Slings 2–3×/week; juveniles ~weekly; adults every 7–14 days
Supplements
None – gut-load feeders only

Behaviour and handling

Handling
Not recommended – fast, defensive, potent venom; observation only
Communal
No – solitary and cannibalistic
Defense / stress signs
Threat posture, stridulation, bolting, heavy silk barricade; no hair-kicking

Reproduction

Reproduction
Oviparous; 1 egg sac, ~60–150 spiderlings; fast-growing slings

Common health problems

Common health issues
SignsDehydration, mold/mites if over-damp, poor molt if too dry, fall/rupture, DKS from pesticides
Red flags / quarantine
SignsPrefer captive-bred; quarantine any WC for mites/nematodes; watch DKS, death curl, chronic fasting

Good to know

  • Its blue-violet shimmer mimics an electrical spark; the species epithet was auctioned for charity to fund Lahu children's education and cancer patients

Others in this group

Sources