Buenos Aires tetra Directory References Discover How Did the Sperm Whale Get Its Name? The World’s 5 Most Commonly Used Writing Systems Roman Catholic Saints 7 Unique Burial Rituals Across the World 10 Great Sports Rivalries How Deadly Is Quicksand? Timeline of the Space Race, 1957–69 Contents Buenos Aires tetra fish Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Hemigrammus caudovittatus Learn about this topic in these articles:description In tetraThe Buenos Aires tetra (Hemigrammus caudovittatus) grows to 9 cm; it has reddish fins and a dark, lengthwise stripe on each side that widens to a diamond-shaped spot on each side of the tail root.Read More