Green Bottle Blue Tarantula Care Guide

Chromatopelma cyaneopubescens — the Green Bottle Blue, or GBB — is native exclusively to the Paraguaná Peninsula in Venezuela's Falcón State, where it occupies a narrow coastal strip classified as xeric scrubland: sparse, sun-baked terrain of thorn trees, columnar cacti, and low brush where rainfall is minimal and the climate is hot and dry year-round.

This stands in direct contrast to the humid tropics many keepers associate with Venezuelan species, and is the single most important fact governing captive care. In the field, GBBs establish silk retreats at the base of thorn trees, beneath flat rocks, or within dried cacti — extending a broad hammock or funnel of webbing outward as both a prey-detection tripwire and a buffer against the abrasive desert environment.

The genus Chromatopelma is monotypic — the GBB is its only member. Spiderlings bear no resemblance to adults, emerging in banded orange-and-black with metallic turquoise femurs. Through successive moults this transforms into the adult's signature bottle-green carapace, electric blue legs, and dense orange abdomen. Freshly moulted individuals display the most saturated colouration.

GBBs are terrestrial-first but will readily web upward given anchor points, so a versatile enclosure with both floor space and moderate height works best. Good cross-ventilation is essential — this is a dry-habitat species and stagnant humid air will cause health problems.

Provide multiple anchor points — cork bark pieces, branches, fake plants — at varying heights. GBBs will fill every available space with their distinctive hammock webbing. This webbing is a major part of the display appeal of keeping this species.

Reflect the Paraguaná xeric environment: warm, dry, and well-ventilated.

GBBs are enthusiastic feeders with a strong prey response. They will actively pursue prey rather than waiting in ambush — one of the more engaging feeding behaviours in the hobby.

Prey: Gut-loaded crickets, Dubia roaches, mealworms. Prey should be no larger than the spider's abdomen. Adults will readily take large crickets or adult Dubias.

Frequency: Juveniles every 5–7 days. Adults every 7–14 days. GBBs tend to maintain a plump abdomen even with regular feeding — an indication of a healthy, well-hydrated spider.

Remove uneaten prey within 24 hours. GBBs will often web up uneaten prey items — check the enclosure carefully before adding new food.

GBBs moult roughly every 3–4 months as juveniles, slowing to every 6–12 months or more as adults. Each moult produces a dramatic colour refresh — adult GBBs at their freshest post-moult colouration are widely considered one of the most visually striking invertebrates in the hobby.

Pre-moult signs: Darkened abdomen, food refusal, reduced activity, possible web mat over the enclosure floor. Remove live prey immediately.

Post-moult: Do not offer food for 10–14 days minimum. Allow the new exoskeleton to fully harden before feeding. A fresh GBB immediately post-moult will display its most saturated colours — photograph it.

GBBs are skittish rather than aggressive — their first response to disturbance is fast evasion, not threat posturing. With slow, deliberate movements, many individuals can be handled, though this species is not generally recommended for regular handling due to its speed.

Urticating hairs are present (Type IV) and will be kicked when the spider feels threatened. Keep interactions calm and brief. Always handle over a low surface — a fall can be fatal.