【璀璨新生】海洋大明星 - 小丑魚
The 30 or so known species of clownfish belong to the subfamily Amphiprioninae. They all form inseparable symbiotic relationships with sea anemones. Because of this, they are also called ‘anemonefish’. One of the most notable features of clownfish is their ability to change sex. Usually, the largest and second-largest individuals in a population of clownfish are a mature female and a breeding male, respectively, while the rest of the population consists of sexually immature fish. If the female dies, the breeding male will replace it by changing into a female, and the largest of the immature fish will mature into a new breeding male. Female clownfish cannot become males again. This irreversible phenomenon is called ‘sequential hermaphroditism’.
【璀璨新生】珊瑚礁中的湛藍波紋 - 疊波蓋刺魚
疊波蓋刺魚 Pomacanthus semicirculatus
Semicircle angelfish are usually found on coral reefs. The adults and juveniles differ greatly in appearance. Juveniles have a deep dark-blue body that is marked from top to bottom with a series of narrow white arcs. Adult fish, in contrast, are yellow and black with no such arcs. Divers generally encounter juveniles, which tend to live at shallower depths than the adults.
【璀璨新生】海平面下的大花臉 - 條紋蓋刺魚
條紋蓋刺魚 Pomacanthus imperator
The emperor angelfish, found on coral reefs and in clear-water lagoons, has 10 to 25 horizontal yellow stripes as adults. Juveniles have a dark blue body marked from top to bottom with concentrically curved white lines, the most posterior of which completely enclose each other. The number of such arcs increases as the fish grows. Sub-adults become tan in color, and the arcuate white lines gradually transform into the adults’ horizontal stripes. Adult fish vary in body color from olive-brown to dark brown. These fish are territorial and make a knocking sound to warn off intruders.