Cobalt Blue Tarantula Overview
The Cobalt Blue Tarantula (Cyaneopubescens) is a stunning and highly sought-after species in the tarantula world, admired for its vibrant metallic blue coloration and, in some cases, its relatively docile temperament. Originating from the tropical rainforests of Myanmar and Thailand, these captivating arachnids have become a favorite among both novice and experienced tarantula keepers. While their beauty is undeniable, prospective owners must understand their specific care requirements, including enclosure setup, diet, and handling. This comprehensive guide will delve into the fascinating world of the Cobalt Blue Tarantula, providing essential facts and insights to ensure a thriving and safe experience for both the tarantula and its keeper. It is important to consider that while some individuals exhibit docility, they are still venomous animals and should be handled with respect.
Origin and Habitat
Cobalt Blue Tarantulas are native to the tropical rainforests of Southeast Asia, specifically found in Myanmar and Thailand. In their natural habitat, these tarantulas dwell in burrows within the earth, often under the cover of leaf litter and vegetation. The humid and warm climate of their native region is crucial for their survival. Understanding their natural environment is key to replicating a suitable habitat in captivity. This species thrives in a tropical environment, therefore, maintaining the correct temperature and humidity levels is essential for their health and well-being. It is also important to source your tarantula from a reputable breeder to ensure it has been raised in a healthy environment and is free from diseases or parasites.
Temperament and Docility

The term “docile” when applied to Cobalt Blue Tarantulas should be understood with caution. While some individuals may exhibit a calmer demeanor, these tarantulas are still venomous creatures and can be defensive if they feel threatened. Their temperament can vary depending on individual personality, age, and the environment they are kept in. Young Cobalt Blues tend to be more skittish, while mature specimens may be more tolerant of handling. However, handling should always be done with care and respect. It is best to observe the tarantula’s behavior and body language before any attempt to handle it. Be mindful of any warning signs such as a raised defensive posture or the flicking of urticating hairs, as these are indicators of potential aggression.
Physical Characteristics
The Cobalt Blue Tarantula is renowned for its striking appearance, a major factor in its popularity among tarantula enthusiasts. Their coloration, a brilliant metallic blue, sets them apart from many other tarantula species. They possess a robust build and powerful legs, enabling them to effectively navigate their environment. Understanding their physical characteristics is essential for providing appropriate care and recognizing any signs of health issues. Their appearance is one of the primary reasons for their popularity, and appreciating their unique features adds to the enjoyment of keeping these fascinating creatures.
Size and Appearance
Cobalt Blue Tarantulas are a medium-sized tarantula species. Females typically grow to around 5-6 inches in leg span, while males tend to be slightly smaller. Their bodies are covered with fine hairs, and their overall appearance is quite impressive due to the intense blue coloration. The carapace and legs are the most prominent areas displaying the vibrant blue hue. The abdomen is usually a darker shade, often with a black or greyish tone. The contrast between the bright blue and the darker body creates a stunning visual effect, making them a true gem of the tarantula world.
Coloration

The most distinguishing feature of the Cobalt Blue Tarantula is, of course, its striking blue coloration. This metallic blue is most vivid on the legs and carapace. The intensity of the blue can vary slightly depending on the individual tarantula, its age, and its overall health. The blue coloration is not just a visual spectacle; it also serves a purpose. The vibrant colors may play a role in attracting mates or in camouflage within their natural habitat. The presence and intensity of the blue is a reliable indicator of the tarantula’s health. A dull or faded color may indicate stress or illness, thus it is vital to monitor the appearance of your tarantula to ascertain its wellbeing.
Diet and Feeding
Proper nutrition is paramount to the health and longevity of your Cobalt Blue Tarantula. They are voracious eaters, and their diet should consist primarily of insects. Providing a varied diet and monitoring their feeding habits are essential for their well-being. Understanding their dietary requirements ensures that you can provide the appropriate nutrients and avoid any potential health issues. A healthy diet leads to a healthy tarantula, and the vibrant colors and overall vigor are a direct reflection of their diet. The type and amount of food will depend on the tarantula’s age and size, therefore adjustments in diet will be required over the tarantula’s lifetime.
What Cobalt Blue Tarantulas Eat
In the wild, Cobalt Blue Tarantulas are opportunistic predators, feeding on a variety of insects and small invertebrates. In captivity, their diet should mimic this as closely as possible. Common food items include crickets, cockroaches, mealworms, and occasionally, small spiders. It’s crucial to ensure that the insects offered are gut-loaded before feeding them to your tarantula. Gut-loading involves feeding the insects a nutritious diet, which in turn provides the tarantula with essential vitamins and minerals. The size of the prey should be appropriate for the tarantula’s size; generally, the prey should be no larger than the tarantula’s abdomen. Providing a varied selection of food items helps ensure a balanced diet and can prevent nutritional deficiencies.
Feeding Frequency

The feeding frequency for Cobalt Blue Tarantulas depends on their age and size. Spiderlings and juveniles should be fed more frequently, usually every other day or every three days. Adults can be fed less often, perhaps once or twice a week. It is crucial to observe your tarantula’s behavior and adjust the feeding schedule accordingly. If the tarantula refuses to eat, it may be a sign that it is about to molt, or that it is not hungry. Always remove any uneaten food within 24 hours to prevent the growth of mold and mites in the enclosure. Providing clean water at all times is also vital for their health. The water should be kept in a shallow dish and frequently refilled to ensure they have access to fresh water at all times.
Enclosure and Environment
Creating the right environment for your Cobalt Blue Tarantula is essential for its well-being. Their enclosure should mimic their natural habitat as closely as possible. This includes providing the correct temperature, humidity, and appropriate substrate. A well-designed enclosure reduces stress, encourages natural behaviors, and provides a safe and comfortable home for your tarantula. The right enclosure will greatly enhance your experience of keeping this species. The enclosure should be secure and provide a stimulating environment that meets the tarantula’s needs.
Ideal Enclosure Setup
The enclosure should be appropriately sized, considering the tarantula’s adult size. A good rule of thumb is to provide an enclosure that is at least twice the tarantula’s leg span in width. A 10-gallon tank is often sufficient for an adult. The enclosure should be escape-proof, with a secure lid. The substrate should consist of a mixture of peat moss, vermiculite, and coconut fiber. This combination helps retain moisture and creates a burrowing environment. Include a hide, such as a piece of cork bark or a hollow log, to provide a secure retreat for the tarantula. Provide a shallow water dish with clean water at all times. Avoid using any sharp or potentially harmful decorations within the enclosure.
Temperature and Humidity

Cobalt Blue Tarantulas thrive in a warm and humid environment. Maintain a temperature range of 75-85°F (24-29°C). Use a heat lamp or a heat mat to maintain the appropriate temperature. Humidity levels should be kept between 70-80%. You can monitor the humidity using a hygrometer. Misting the enclosure with water a few times a week or providing a large water dish can help maintain the required humidity. Regular monitoring of both temperature and humidity is essential for ensuring the tarantula’s comfort and health. Proper environmental conditions will help with molting and overall vigor. Make sure that the temperature and humidity are carefully regulated to prevent the development of mold or the tarantula becoming stressed.
Handling and Care
While some Cobalt Blue Tarantulas may appear docile, it is vital to approach handling with extreme caution. Their venom is not considered lethal to humans, but a bite can be painful and cause localized symptoms. Regular care involves providing the correct environment and nutrition, as well as observing the tarantula for any signs of illness or stress. Always prioritize the safety and well-being of both the tarantula and yourself. Respect the fact that it is a venomous animal and always exercise the appropriate level of caution when interacting with it.
Safe Handling Practices
Handling should be kept to a minimum. If handling is necessary, do so with utmost care. Avoid quick movements or actions that might startle the tarantula. Before attempting to handle, observe the tarantula’s body language. If it exhibits a defensive posture, such as raising its front legs or displaying its fangs, do not proceed. Handle the tarantula over a soft surface, such as a bed or a couch, in case it falls. Never force the tarantula to move. Always wash your hands thoroughly before and after handling to prevent the transfer of any contaminants. Be prepared for a potential bite; while not usually medically serious, it will be uncomfortable. Consider using a hook to gently move the tarantula if necessary, or simply allowing it to walk onto your hand. Never handle a tarantula when tired or distracted.
Common Health Issues

Cobalt Blue Tarantulas are generally hardy, but they can be susceptible to certain health issues. Parasites, such as mites, can infest the tarantula and its enclosure. Mold can develop in the enclosure if humidity is too high or ventilation is insufficient. Watch for signs of illness such as lethargy, loss of appetite, or unusual behavior. If you suspect any health issues, consult with a veterinarian experienced with arachnids. Providing a proper diet, maintaining the correct environment, and practicing good hygiene are the best ways to prevent health problems. Regular observation is key to early detection and treatment of any health issues.
Lifespan and Breeding
Understanding the lifespan and breeding habits of Cobalt Blue Tarantulas can help provide the best possible care and prepare you for the different stages of their lives. Their longevity and the challenges of breeding add another layer of interest for keepers of this species. Being aware of these factors will help you provide the appropriate care and also understand the complexities involved in breeding these beautiful creatures. This knowledge is important for both experienced keepers and those who are just beginning.
Lifespan in Captivity
Cobalt Blue Tarantulas have a relatively long lifespan. Females can live for 12-15 years or even longer with proper care. Males, however, have a much shorter lifespan, typically only living for 3-5 years after reaching maturity. The lifespan of a tarantula is affected by its environment, diet and genetics. Providing a healthy and stress-free environment maximizes their chances of living longer. Females are often the preferred choice for keepers looking for long-term companionship, while males serve a vital role in the reproductive cycle. The long lifespan of females means a lasting relationship with your pet.
Breeding Challenges

Breeding Cobalt Blue Tarantulas can be a rewarding but also challenging endeavor. Successful breeding requires careful preparation and understanding of the species’ mating behavior. Matching the right conditions is crucial, including proper temperature, humidity, and environmental conditions. The female tarantula must be in good health, and the male must be mature. The process involves introducing the male to the female’s enclosure, and if the female is receptive, mating will occur. After mating, the female will usually lay an egg sac, which she will fiercely guard. Raising spiderlings requires specialized care and knowledge. Due to these challenges, it is best to research extensively if you are interested in breeding this species, and often best left to experienced breeders.
In conclusion, the Cobalt Blue Tarantula is a captivating species that can bring immense joy to those who are well-prepared to care for it. Understanding their requirements for habitat, diet, and handling is essential for ensuring their health and well-being. While their striking appearance and the possibility of a relatively docile temperament make them appealing, responsible ownership is paramount. By providing the right environment, a nutritious diet, and a cautious approach to handling, you can enjoy the beauty and fascination of the Cobalt Blue Tarantula for many years to come.
