Moon jellyfish（圖片來源：Luc Viatour，採用  CC BY-SA 3.0  授權） The moon jellyfish ( Aurelia aurita ), commonly known as the moon jelly, is one of the most familiar jellyfish species and belongs to the class Scyphozoa. Its body is transparent and delicate in appearance, with four horseshoe-shaped gonads clearly visible in the center of the bell, which serve as a key identifying feature. Adult individuals typically reach a bell diameter of approximately 25 to 40 cm. Although they are ca

Australian spotted jellyfish（圖片來源：Lviatour，採用  CC BY-SA 3.0  授權） The Australian spotted jellyfish ( Phyllorhiza punctata ) is a species native to the western Pacific Ocean, with a natural range extending from the northeastern coast of Australia to Japan and Southeast Asia. Within these tropical and subtropical waters, it commonly inhabits estuaries, bays, and warm coastal areas, often drifting in large aggregations. Its bell is semi-transparent and covered with numerous white

Magnificent sea anemone（圖片來源：The Cosmonaut，採用 CC BY-SA 2.5  授權） The magnificent sea anemone ( Radianthus magnifica ) is widely distributed across tropical waters of the Indian Ocean and the Pacific Ocean. Its range extends from the Red Sea and the eastern coast of Africa to the coral reefs of Australia and Oceania. This anemone is striking in appearance. When the oral disc is fully expanded it commonly exceeds half a meter in diameter, and in some cases may reach more than on

giant Caribbean sea anemone（圖片來源：Nhobgood Nick Hobgood，採用  CC BY-SA 3.0  授權） The giant Caribbean sea anemone ( Condylactis gigantea ) is primarily distributed in the Caribbean Sea, the West Indies, and the western Atlantic Ocean. In the wild, it usually attaches to crevices in rock walls, stones, shells, or other hard substrates. It favors shallow waters and is particularly common in the seas around Bermuda. Individuals may also occur along the outer edges of atolls or inside

Congo bichir ( Polypterus congicus ) captured from its native habitat。（圖片來源：Diodio Sorue Achille，採用  CC BY-NC 4.0  授權。） The Congo bichir ( Polypterus congicus ) is a member of the order Polypteriformes and the family Polypteridae within the class Actinopterygii. It is a predatory fish frequently encountered in the aquarium trade. Because of its primitive appearance and body structure that differs markedly from most other bony fishes, it is widely known as a “dinosaur fish.” I

Reedfish ( Erpetoichthys calabaricus )（圖片來源：Michał Zalewski，採用  CC BY-SA 4.0  授權。） The reedfish ( Erpetoichthys calabaricus ) is a member of the class Actinopterygii, order Polypteriformes, and family Polypteridae. It is a predatory species commonly encountered in the aquarium trade. Because of its extremely primitive appearance and its body structure that differs markedly from most other bony fishes, it is often referred to in the aquarium market as a “dinosaur fish.” In the