鰭 [鳍]

Jyutping kei4
Pinyin qí

Definitions (粵典–words.hk)
  1. 名詞
    魚類​用​嚟​游水​同​保持平衡​嘅​器官​（​量​詞​：​條​）
    (of fish) fin
    • 我都唔明鯊魚條鰭有乜嘢好食。
      我都唔明鲨鱼条鳍有乜嘢好食。
      I can't understand why people are eating shark's fin.
Definitions (Wiktionary)
  1. character
    fin, flipper
Definitions (Unihan)
  1. fin
  2. Cangjie Input - Traditional
    NFJPA
  3. Cangjie Input - Simplified
    NMJPA

鰭 [鳍]

Jyutping
Pinyin qí

Definitions (CC-CEDICT)
  1. fin
Examples (粵典–words.hk)
  1. Cantonese
    我都唔明鲨鱼条鳍有乜嘢好食。
    我都唔明鯊魚條鰭有乜嘢好食。
    • I can't understand why people are eating shark's fin.
  2. Cantonese
    蓝鳍吞拿鱼
    藍鰭吞拿魚
    laam4 kei4 tan1 naa4 jyu2
    • bluefin tuna
Examples (Wiktionary)
  1. Mandarin
    远洋白鳍鲨、青鲛、所有三种锤头双髻鲨和所有蝠鲼于2014年列入附录II
    遠洋白鰭鯊、青鮫、所有三種錘頭雙髻鯊和所有蝠鱝於2014年列入附錄II
    yuǎn yáng bái qí shā ， qīng jiāo ， suǒ yǒu sān zhǒng duī tóu shuāng jì shā hé suǒ yǒu fú fèn yú ２０１４ nián liè rù fù lù ＩＩ
    • X