big-bellied seahorse Directory References Discover 7 of the World’s Deadliest Shipwrecks Which Religion Is the Oldest? How Deadly Is Quicksand? Titanosaurs: 8 of the World's Biggest Dinosaurs 10 of the World’s Most Dangerous Fish Causes of the Great Depression What is Holy Week? Contents big-bellied seahorse fish Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Hippocampus abdominalis Learn about this topic in these articles:seahorses In seahorseThe largest species, the big-bellied seahorse (H. abdominalis), which inhabits the waters off South Australia and New Zealand, can grow up to 35 cm (13.8 inches) in length.Read More