The Male Brazilian Blue Tarantula (BBT), Chromatopelma cyaneopubescens, is a stunning and increasingly popular pet in the exotic animal world. Known for its vibrant blue coloration, especially on its legs, and relatively docile temperament, the male BBT offers a fascinating glimpse into the world of arachnids. However, owning one comes with responsibilities. This comprehensive care guide provides everything you need to know to properly care for a male Brazilian Blue Tarantula, ensuring its health, happiness, and longevity. From understanding their basic needs to recognizing signs of distress, this guide is your essential resource.
Understanding the Male Brazilian Blue Tarantula (BBT)
Before acquiring a male BBT, it’s crucial to understand its natural history and biology. These tarantulas originate from the coastal regions of northern Venezuela. In the wild, they are arboreal, meaning they spend a significant amount of time in trees or elevated areas. They are known for their vibrant blue coloration, which typically intensifies with maturity, especially in males. Male BBTs, unlike females, have a shorter lifespan. This is important to note. They also mature faster and exhibit distinct physical characteristics that distinguish them from females. This section aims to give you a foundation about their nature and biology to help you better understand your pet.
Identifying a Male BBT
Accurately identifying the sex of a BBT is essential for providing the right care. Males and females have distinct features. Accurate sexing is important to determine lifespan and prepare for breeding if desired. In spiderlings, sexing can be challenging, often requiring the use of a microscope to examine the pre-genital region. As they mature, distinct characteristics become visible. Males typically have a slimmer build compared to the bulkier females, which are built to carry eggs. The most reliable method for sexing is to look for the presence of tibial hooks on the front legs of the mature males.
Physical Characteristics of Male BBTs

Male BBTs display specific physical traits that set them apart. As mentioned, they typically have tibial hooks on their front legs, which are used to hold the female’s fangs during mating. These hooks are absent in females. Males also have a smaller overall size compared to females, which are built to carry eggs and thus need a more robust build. Their abdomens tend to be smaller. These characteristics are key to sex identification. As they mature, their coloration becomes more vibrant, with the blue hues on their legs and carapace intensifying, making them quite visually striking. Observing these details is part of enjoying owning a male BBT.
Behavioral Traits of Male BBTs
Male BBTs exhibit specific behavioral traits. They tend to be more active and roam their enclosures more frequently, especially when they reach maturity. Unlike females, which may be more sedentary, males are constantly looking for a mate. This increased activity can also make them slightly more prone to bolting if startled, so cautious handling is important. Males are generally less aggressive than females, but it’s essential to handle them carefully to prevent stress or accidental injury. They also have a shorter lifespan than females, typically living for only a year or two after their final molt. Understanding these behavioral patterns helps you to better meet your BBT’s needs.
Creating the Ideal BBT Habitat
Creating the right habitat is crucial for the health and well-being of your male BBT. A well-designed enclosure mimics their natural environment and provides the necessary conditions for them to thrive. Proper setup not only keeps your tarantula safe but also offers the best opportunity to observe its fascinating behaviors. It is a great way to ensure your tarantula lives a long and fulfilled life in captivity, and it is one of the most important things you can provide.
Enclosure Size and Setup

The size of the enclosure should be appropriate for the tarantula’s size, with a male BBT that’s a mature adult needing an enclosure of at least 10 gallons or larger. Since BBTs are semi-arboreal, the enclosure’s height is more important than the width. The enclosure should be tall enough to allow for climbing and the construction of webs. A secure lid is essential to prevent escapes. Ventilation is also a key factor; ensure the enclosure has adequate airflow to prevent mold growth and maintain proper humidity levels. A well-ventilated enclosure will also improve your tarantula’s health.
Substrate and Decor
The substrate should be absorbent and able to hold moisture to maintain proper humidity. A mixture of coco coir, peat moss, and sphagnum moss works well. This combination offers good drainage while still allowing moisture to be retained. Avoid using cedar or pine shavings, as these can be toxic to tarantulas. Decorate the enclosure with climbing structures, such as cork bark or branches, to mimic their natural habitat. Provide a hide, such as a half-log or a commercially available hide, where the tarantula can retreat. This hiding place gives them a sense of security. Live plants, if chosen, should be non-toxic and well-established in the enclosure before introducing the tarantula.
Temperature and Humidity Requirements
Male BBTs thrive in temperatures between 75°F and 85°F (24°C and 29°C). A heat lamp or under-tank heater can maintain these temperatures, but monitor the temperature closely with a thermometer to prevent overheating. Humidity should be kept between 65% and 75%. Use a hygrometer to measure the humidity levels. Mist the enclosure lightly every few days, depending on the humidity level, or provide a water dish. Proper temperature and humidity are crucial for molting and overall health. Make sure the enclosure conditions are appropriate at all times.
Feeding Your Male BBT

Proper nutrition is essential for your male BBT’s health. They are opportunistic feeders, meaning they will eat whatever is available to them. Providing a varied and balanced diet will ensure they get the nutrients they need to stay healthy. A well-fed tarantula is a happy tarantula, so make sure you get the right food choices to keep your pet happy.
Suitable Food Options
The staple diet for male BBTs consists of insects. Crickets, mealworms, dubia roaches, and even small superworms are excellent choices. The size of the prey should be appropriate for the tarantula’s size – it should be no larger than the tarantula’s body. It’s also important to provide a variety of food to ensure a balanced diet. Offer a mix of insects and avoid feeding them only one type of insect. This prevents nutritional deficiencies. Always dust the feeder insects with a calcium and vitamin D3 supplement to promote healthy growth.
Feeding Frequency
The feeding frequency for a male BBT depends on its age and size. Spiderlings can be fed two to three times a week. As they grow and reach adulthood, they may only need to be fed once or twice a week. Overfeeding can lead to obesity, so it is important not to overfeed your tarantula. Always remove any uneaten food within 24 hours to prevent mold and mites. Adjust feeding frequency based on your tarantula’s appetite and growth rate, and make sure to observe their behaviors.
Watering and Hydration

Providing fresh water is essential. Always have a shallow water dish filled with clean water. The dish should be small enough to prevent the tarantula from drowning. Some tarantula keepers prefer to use a cotton ball soaked in water, but a water dish is usually preferred. Make sure to change the water in the dish every day to prevent bacteria growth. Mist the enclosure lightly every few days to maintain humidity. The humidity level in the enclosure is very important, and is what dictates the tarantulas health.
Handling and Safety Tips for Male BBTs
Handling a male BBT should be done with caution. While they are generally not aggressive, they can still bite if they feel threatened. Before handling, make sure the tarantula is calm and not in the middle of a molt. Always wash your hands before and after handling to avoid transferring any substances. Handle them close to the ground or over a soft surface to minimize the risk of injury if they fall. If the tarantula is startled or tries to bolt, gently put them back into their enclosure.
When to Avoid Handling
There are several instances when you should avoid handling your BBT. During molting, they are very vulnerable, and handling can be fatal. Do not handle them within a week before or after they molt. Avoid handling them if they show signs of stress, such as defensive posturing or flicking hairs. It’s always best to prioritize the tarantula’s safety. Avoid handling them if they have just eaten, as they may regurgitate their meal. And avoid handling them at night since this is when they are most active.
Recognizing Signs of Stress

Knowing how to identify signs of stress is crucial. Defensive postures, such as rearing up or displaying fangs, are clear indicators that the tarantula feels threatened. Flicking hairs from its abdomen is another defense mechanism. Loss of appetite, lethargy, and excessive hiding can also indicate stress or illness. If you observe these signs, immediately stop handling your tarantula. Ensure the enclosure meets all its needs and make necessary adjustments. If the signs persist, consult a veterinarian experienced with exotic animals.
Breeding Considerations for Male BBTs
Breeding BBTs requires careful planning and preparation. If you are interested in breeding, it is a complex undertaking. Male BBTs play a critical role in the breeding process, and understanding their behavior is paramount. Success in breeding requires precise timing, environmental control, and the ability to distinguish between males and females.
Preparing for Mating
Before attempting to breed, make sure you have healthy, mature specimens. The female should be well-fed. The male must have reached sexual maturity. Introduce the male to the female’s enclosure. Observe them carefully for signs of acceptance or aggression. The male will drum on the ground to attract the female. Be ready to separate them immediately if the female displays aggression. The process requires careful planning and patience. The male’s shorter lifespan makes successful breeding crucial.
Post-Mating Care

After mating, the male should be removed from the female’s enclosure. The female may attack and eat the male if she is not receptive. The female will produce an egg sac. You should provide appropriate care for the female and the egg sac. The incubation period can last for several weeks. Success in breeding depends on carefully managing the environment and the health of the spiders.
Common Health Issues in Male BBTs
Like any pet, male BBTs can experience health problems. Recognizing these issues early and taking prompt action is crucial for their survival. Some issues are easily treatable, while others require specialized veterinary care. Regular monitoring and proactive care are key to keeping your tarantula healthy. Learning about these issues can help you become a better caretaker.
Shedding and Molting
Molting is a natural process where tarantulas shed their exoskeletons to grow. During molting, the tarantula is incredibly vulnerable. Signs of an impending molt include loss of appetite, darkening of the abdomen, and lethargy. Provide a moist environment and avoid disturbing the tarantula during this process. Never handle them while they are molting. If the molting process is interrupted, the tarantula may have problems. Be patient, and ensure the enclosure conditions are right.
After molting, the tarantula’s new exoskeleton is soft. Do not feed the tarantula for several days until its new exoskeleton hardens. Providing a moist environment during molting helps the process. It is a good idea to keep the humidity levels right. The tarantula may also appear pale after a molt.
Preventing and Addressing Parasites and Diseases
Maintaining a clean enclosure is essential for preventing parasites and diseases. Inspect the tarantula regularly for signs of mites or other parasites. Mites can be identified as tiny, moving dots. Remove any uneaten food and fecal matter to prevent the buildup of bacteria. If you notice parasites, isolate the tarantula and consult a veterinarian experienced with exotic animals. Provide a clean and sanitary enclosure to ensure that your tarantula is in the best possible condition to ward off any diseases.
Conclusion
Caring for a male Brazilian Blue Tarantula can be a rewarding experience. Their vibrant colors and interesting behaviors make them fascinating pets. Proper care involves providing the right habitat, nutrition, and handling. By following the guidelines in this guide, you can ensure that your male BBT lives a healthy and fulfilling life. Always remember to research and learn as much as possible about your pet. Continuous learning is important to provide the best care possible. Enjoy your journey into the world of tarantula keeping.