Phono-semantic compound (形聲): semantic 魚(“fish”) + phonetic 安(OC *qaːn) – a kind of fish.
Found in ancient Chinese as corruption of 鰋 (changing 匽 to 安) and originally meaning a kind of catfish. Later, independently coined in Edo period Japan in word 鮟鱇(ankō, “monkfish”) from ateji安康(ankō) by adding the 魚(“fish”)radical to each of the ateji characters. As found in Chinese, not considered a Japanese kokuji coinage, though 鱇 is kokuji, as it is not found in Chinese. Subsequently borrowed into Chinese from Japanese, both in compound 鮟鱇 and as isolated 鮟.