Chromatopelma cyaneopubescens
Greenbottle Blue (GBB) - complete care guide
Greenbottle Blue (GBB)
Temperature
22-26 °C
Target ambient range
Humidity
40-60 %
Substrate / enclosure RH
Adult DLS
12-14 cm
Average - varies per individual
Moult interval
Sling 3-6w - Juv 2-3mo
Adult 6-8mo
Adult cycle = mature females; males never moult again after maturity
About
Three-tone showpiece: metallic green carapace, blue legs, vivid orange abdominal setae. Heavy webber, fast-growing, hardy. Likes it relatively dry.
Husbandry cheat sheet
- Origin
- Venezuela (Paraguaná Peninsula)
- Habitat
- Arid scrub & dune edge
- Temperament
- Fast
- In your collection
- 0
Growth, lifespan & conservation
- Growth rate
- Fast
- Maturity
- ♀ 18mo ♂ 12mo
- Lifespan
- ♀ 12yr ♂ 2yr
- Continent
- South America
- UK availability
- Commonly available
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Care Guide
Chromatopelma cyaneopubescens
Greenbottle Blue (GBB) - a complete husbandry sheet. Use as a starting point and adjust to your individual specimen.
What size enclosure does a Greenbottle Blue (GBB) Tarantula need?
Adults
30 × 30 cm (12 × 12 in) for a mature adult. This is a medium species. Floor space matters more than height.
Slings & Juveniles
House spiderlings in small, appropriately sized deli cups or sling enclosures - oversized enclosures make prey capture difficult. Upgrade roughly every 2-3 moults.
To map exact floor space and substrate safety limits for your setup, use our free interactive tarantula enclosure planner.
What temperature and humidity does a Greenbottle Blue (GBB) Tarantula need?
Heating
The Greenbottle Blue (GBB) is comfortable at 22-26 °C. Most UK homes sit in or near this range for most of the year; heat the room rather than the enclosure if winter drops below it.
Humidity
GBBs come from Venezuela's dry scrub - 40-60 % is correct: bone-dry substrate, generous airflow, water dish, no misting. Chasing tropical humidity for a GBB is the single most common (and fatal) mistake with this species.
Ventilation
Maximum practical cross-ventilation - this is a wind-scrubland species. Stagnant air suits nothing about a GBB.
What substrate is best for a Greenbottle Blue (GBB) Tarantula?
Recommended Mixes
Depth
5-8 cm
Notes
Keep substrate dry to barely moist - never soaking. Pack it firm enough to support décor.
How do you set up a Greenbottle Blue (GBB) Tarantula enclosure?
Décor
The Hide
They will IGNORE your expensive hide and build a silk fortress in the corner anchored to everything. Provide anchor points; the web IS the hide.
Water
Always provide a shallow fresh water dish. Keep it full and clean it regularly. No sponges.
Lighting
No special lighting needed. Ambient room light is enough; avoid heat lamps and bright spotlights.
How often should you feed a Greenbottle Blue (GBB) Tarantula?
Good Feeders
Long refusal worrying you? Separate premoult fasting from genuine problems with our "Is my T okay?" checker.
Is my Greenbottle Blue (GBB) Tarantula dying or moulting?
Pre-moult signs to look for
Refusing food for weeks is normal before a moult - a healthy Greenbottle Blue (GBB) Tarantula fasting is almost never an emergency in itself. Watch for slowing down and spending more time in the hide, laying a thick moult mat of web on the floor. New World species like this one often show a bald spot on the abdomen that darkens to near-black as the new skin underneath readies - a darkening bald patch is a reliable countdown, not a disease.
On its back is MOULTING, not dying
A Greenbottle Blue (GBB) Tarantula lying upside down or on its side with legs curled inwards is almost certainly mid-moult. Do not touch it, do not right it, do not mist it - just remove any live prey (crickets can kill a defenceless moulter) and leave the room.
How long between moults?
For this species, expect a moult roughly every 21-42 days for spiderlings, every 60-90 days for juveniles, and every 120-180 days for sub-adults, with adult females moulting around every 6 months (up to 8 months at the extreme). Males never moult again after their ultimate (mature) moult.
After the moult: fang hardening time
The new exoskeleton stays soft, with fangs that cannot grip, for roughly 5 days in this species. Offer no food and no handling for about 7 days - feeding too early is how fresh moulters get injured. The shed exuvium is also the best sexing tool there is - see our tarantula sexing guide for what to look for.
Genuinely worried about behaviour that is not moulting? Our "Is my T okay?" triage tool walks the danger signs one by one.
What ongoing care does a Greenbottle Blue (GBB) Tarantula need?
🪞 Moulting
Signs: refuses food, abdomen darkens and goes glossy, becomes sluggish, often heavy webbing or a moult mat. During the moult: do not disturb, remove any live prey, keep water available. Wait until the fangs are black and hard (several days for adults, 1-2 for slings) before feeding again. Adult intervals apply to mature FEMALES - a mature male never moults again (his ultimate moult is his last), and female cycles stretch or shrink with feeding and temperature.
🧹 Cleaning
Daily: check the water dish. Weekly: remove uneaten prey boluses and spot-clean. Full deep clean only every few months, and only when necessary.
✋ Handling
Not recommended - fast, skittish and defensive when startled. Their value is the colour and the architecture, up close through glass.
What are the most common mistakes when keeping Greenbottle Blue (GBB) Tarantulas?
✓ What They Love
- Fresh water dish at all times
- Cross-ventilation
- Stable room temperature
- A proper hide and a few anchor points
✕ Common Mistakes
- Soaking-wet substrate
- Daily misting
- Heat mat underneath the enclosure
- Tall enclosures with hard décor (fall risk for terrestrials)
- Chasing 70-80 % humidity - GBBs want it DRY
- Removing the webbing during cleaning - it is their home, not mess
Keep exploring: related care guides
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