Keeping a Red-Tailed Black Shark (RTBS) is not for the faint of heart. This type of shark requires a very large aquarium with plenty of space to swim and explore, as they can reach up to 16 inches in length and are known for their active swimming behavior. To ensure that your RTBS has the best environment possible, you should have enough room for it to move between water temperatures ranging from 77°F – 82°F and you will need an appropriate filtration system to keep the water clean. Additionally, live rock or other decorations should be added to provide places for the shark to hide when feeling stressed or threatened. It is also important that you feed your RTBS small pieces of food such as frozen brine shrimp multiple times per week; however overfeeding can lead to health problems so moderation is key! Finally, because these sharks prefer company it’s always recommended that owners house them in pairs or groups whenever possible - this way they can feel more secure and comfortable in their home. With these simple tips in mind, keeping an RTBS can be both rewarding and enjoyable!