The Brilliant Rasbora, also known as the Blackline Rasbora or Red-tailed Rasbora, is a popular freshwater fish in the aquarium hobby. It's characterized by its striking coloration: a golden-yellow body with a prominent black line along its side and a vibrant red spot at the base of the tail. These fish are relatively easy to care for and are known for their peaceful nature, making them a great addition to community tanks. They are also natural schooling fish, thriving when kept in groups of six or more.