Community tanks are aquariums that house multiple species of fish and aquatic creatures that can coexist peacefully. These tanks are designed to create a vibrant underwater environment, showcasing a variety of colors and behaviors. Popular choices for community tanks include species like neon tetras, guppies, and corydoras catfish, which are known for their friendly nature and compatibility with one another. To maintain a healthy community tank, it's essential to consider factors like tank size, water parameters, and the specific needs of each species. Providing plenty of hiding spots with decorations like plants and rocks can help reduce stress and promote harmony among the inhabitants.