{"id":"43932d729288125fdc592a0b22144c3a","text":"Clownfish, wrasses, moray eels, gobies and other fish species are known to change sex, including reproductive functions. A school of clownfish is always built into a hierarchy with a female fish at the top. When she dies, the most dominant male changes sex and takes her place.","source":"Wikipedia","source_url":"Wikipedia","language":"en","permalink":"https://uselessfacts.jsph.pl/api/v2/facts/43932d729288125fdc592a0b22144c3a"}