Electric Blue Tarantula (Chilobrachys natanicharum) Species & Care Guide
The discovery of the Electric Blue Tarantula, Chilobrachys natanicharum, sent shockwaves through the tarantula hobby. While striking blue coloration is not unheard of among tarantulas, few species display it with the intensity and consistency seen in this remarkable spider. Photographs often appear digitally enhanced, yet mature specimens can exhibit vivid electric-blue highlights that seem almost impossible in nature.
Native to Thailand, Chilobrachys natanicharum inhabits tropical environments where warmth, seasonal moisture, and dense vegetation shape the landscape. Unlike arboreal tarantulas that spend their lives among branches or terrestrial species that roam openly across the forest floor, the Electric Blue Tarantula is primarily a burrowing predator. Beneath fallen timber, among root systems, and within hidden underground retreats, these spiders spend much of their lives concealed from view.
This secretive lifestyle influences nearly every aspect of the species' behavior. In the wild, survival depends less on aggression and more on remaining unseen. A well-established burrow provides protection from predators, seasonal weather fluctuations, and the intense tropical heat that can build above ground. Silk plays a major role in this strategy. Individuals heavily reinforce tunnel entrances and surrounding areas with thick sheets of webbing, creating a network that helps detect vibrations and approaching prey.
Although often purchased for its spectacular coloration, many keepers discover that the Electric Blue's behavior becomes equally fascinating over time. A juvenile may disappear underground for weeks, only revealing its presence through expanding layers of silk and carefully engineered tunnel systems. The enclosure gradually transforms into a miniature underground ecosystem that reflects how the species lives in nature.
Natural History
Chilobrachys natanicharum belongs to the family Theraphosidae and is considered an Old World tarantula. Unlike New World species from the Americas, Old World tarantulas lack urticating hairs and instead rely on speed, defensive posturing, and potent venom as their primary means of protection.
The genus Chilobrachys contains numerous Asian burrowing species known for heavy web production, rapid growth rates, and impressive feeding responses. Among them, however, C. natanicharum has quickly become the flagship species due to its extraordinary appearance.
As adults, females can reach leg spans of approximately 5 to 6 inches, with males remaining somewhat smaller and more slender. Juveniles often show hints of blue coloration, but the most impressive colors generally emerge as the spider matures.
Temperament and Behavior
The Electric Blue Tarantula should be considered an advanced species.
Like many Old World tarantulas, it is exceptionally fast and capable of covering surprising distances in a matter of seconds. Defensive displays are not uncommon when a spider feels cornered or exposed. Rather than attempting to handle the animal, experienced keepers generally appreciate it as a display species whose behavior can be observed within the enclosure.
Fortunately, aggressive behavior is often exaggerated. Given adequate burrowing opportunities and secure retreats, most specimens prefer avoidance over confrontation. A well-settled spider spends much of its time managing its burrow, expanding webbing, and waiting for prey.
Housing the Electric Blue Tarantula
Success with this species begins beneath the surface.
A deep layer of moisture-retentive substrate allows the spider to create the extensive burrow systems it naturally prefers. Enclosures that are too shallow often result in stressed animals that remain exposed and defensive.
Vivarium Naturals Brand- Arachno Thrive Burrowing Substrate works well when maintained slightly moist below the surface. A piece of cork bark or other structure can provide an initial starting point for excavation.
Ventilation remains important, but the species generally appreciates more humidity than many desert or semi-arid tarantulas. The goal is not a wet enclosure but a stable environment where deeper substrate layers retain moisture while the upper surface remains relatively dry.
Many keepers are surprised by how quickly an enclosure becomes webbed over. Thick silk sheets extending across substrate, décor, and burrow entrances are completely normal and often indicate that the spider is thriving.
Feeding and Growth
The Electric Blue Tarantula is typically an enthusiastic feeder.
Appropriately sized crickets, roaches, and other feeder insects are readily accepted. Juveniles often grow at a moderate to fast pace when maintained under proper conditions, while females can eventually live for well over a decade.
Prey items that wander too close to the burrow entrance are usually met with explosive feeding responses. Watching a mature specimen launch from its retreat is often one of the highlights of keeping the species.
Why the Electric Blue Tarantula Has Become So Popular
Many tarantulas earn popularity through rarity. Others become popular because they are easy to keep.
The Electric Blue Tarantula has achieved both recognition and demand because it combines dramatic coloration, fascinating behavior, and the mystery that comes with a largely hidden lifestyle. Even when the spider itself remains underground, the enclosure tells a story through layers of webbing, carefully engineered tunnels, and the occasional glimpse of brilliant blue legs emerging from the darkness.
For experienced keepers seeking one of the most visually stunning Old World tarantulas for sale and currently available in the hobby, Chilobrachys natanicharum stands among the most impressive species discovered in recent decades.
Quick Facts
Scientific Name: Chilobrachys natanicharum
Common Name: Electric Blue Tarantula
Type: Old World Fossorial Tarantula
Origin: Thailand
Adult Size: 5–6 inch leg span
Temperament: Defensive, fast-moving
Growth Rate: Moderate to fast
Experience Level: Advanced
Lifespan: Females 10–15+ years, males significantly shorter
