The Réunion seahorse (Hippocampus borboniensis) is a species of fish in the Syngnathidae family. It is found in Madagascar, Mauritius, Mozambique, Réunion, South Africa, and Tanzania. Its natural habitat is subtidal aquatic beds. It is threatened by habitat loss.
The Bullneck Seahorse (Hippocampus minotaur) is a species of fish in the Syngnathidae family. It is endemic to Australia. Its natural habitats are open seas, shallow seas, subtidal aquatic beds, coral reefs, estuarine waters, and karsts.