Aphonopelma gabeli
Carlsbad Green - complete care guide
Often searched as: Aphonoplema gabeli.
Carlsbad Green
Temperature
21-27 °C
Target ambient range
Humidity
40-55 %
Substrate / enclosure RH
Adult DLS
12-15 cm
Average - varies per individual
Moult interval
Sling 4-9w - Juv 2.8-4.5mo
Adult 12-17mo
Adult cycle = mature females; males never moult again after maturity
About
The Carlsbad Green (Aphonopelma gabeli, Smith 1995) - a Chihuahuan Desert Aphonopelma with an olive-bronze carapace sheen (brightest fresh after a moult) and comically oversized chelicerae for its frame. Desert-proof in captivity: months-long fasts, bone-dry substrate, decades-long females - US keepers literally call damp substrate the top cause of death for this species. Calm, slow and nearly indestructible, the way only American Aphonopelma are. UK stock is scarce and often wild-caught pairs; CB slings appear rarely and are worth the wait.
Husbandry cheat sheet
- Origin
- USA (Arizona / New Mexico / west Texas)
- Habitat
- Chihuahuan Desert
- Temperament
- Docile
- In your collection
- 0
Growth, lifespan & conservation
- Growth rate
- Slow
- Maturity
- ♀ 72mo ♂ 54mo
- Lifespan
- ♀ 25yr ♂ 5yr
- Continent
- North/Central America
- UK availability
- Rare in the hobby
Care Guide
Aphonopelma gabeli
Carlsbad Green - a complete husbandry sheet. Use as a starting point and adjust to your individual specimen.
What size enclosure does a Carlsbad Green Tarantula need?
Adults
30 × 25 cm (12 × 10 in) for a mature adult. Floor space matters more than height.
Slings & Juveniles
House spiderlings in small, appropriately sized deli cups or sling enclosures.
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 Carlsbad Green Tarantula need?
Heating
The Carlsbad Greens is comfortable at 21-27 °C and genuinely need no supplementary heat in most UK homes.
Humidity
40-55 %: bone-dry substrate and a full water dish. Desert species - damp kills.
Ventilation
Cross-ventilation is essential - side-vented enclosures, never stagnant.
What substrate is best for a Carlsbad Green Tarantula?
Recommended Mixes
Depth
5-8 cm
Notes
Keep substrate bone-dry. Sand-toned substrates suit the species aesthetically and functionally.
How do you set up a Carlsbad Green Tarantula enclosure?
Décor
The Hide
A cork bark half-log or leaning slab retreat; desert Aphonopelma adopt existing cover rather than digging deep.
Water
Always provide a shallow fresh water dish - the one non-negotiable in an otherwise bone-dry setup.
Lighting
No special lighting needed. Ambient room light is enough.
How often should you feed a Carlsbad Green Tarantula?
Good Feeders
Long refusal worrying you? Separate premoult fasting from genuine problems with our "Is my T okay?" checker.
Is my Carlsbad Green Tarantula dying or moulting?
Pre-moult signs to look for
Refusing food for weeks is normal before a moult - a healthy Carlsbad Green 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 Carlsbad Green 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 30-60 days for spiderlings, every 85-135 days for juveniles, and every 190-300 days for sub-adults, with adult females moulting around every 11.7 months (up to 17.3 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 8 days in this species. Offer no food and no handling for about 8 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 Carlsbad Green Tarantula need?
🪞 Moulting
Signs: refuses food, abdomen darkens and goes glossy, becomes sluggish. Do not disturb; keep water available; wait until the fangs are black and hard before feeding again. Adult intervals apply to mature FEMALES - a mature male never moults again.
🧹 Cleaning
Daily: check the water dish. Weekly: remove uneaten prey boluses and spot-clean.
✋ Handling
Calm and slow - a tolerant species. Handle rarely and low.
What are the most common mistakes when keeping Carlsbad Green Tarantulas?
✓ What They Love
- Fresh water dish at all times
- Bone-dry substrate
- Cross-ventilation
- A proper hide
- Accepting months-long fasts as normal
✕ Common Mistakes
- Damp substrate - the number one killer of this species
- Heat mat under the enclosure
- Worrying about long fasts
- Expecting fast growth
Keep exploring: related care guides
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