鯤 [鲲]

Jyutping kwan1
Pinyin kūn

Definitions (Wiktionary)
  1. character, Chinese
    kun, a large fish that transforms into a roc (鵬／鹏 (péng))
  2. character, literary
    fish roe; fry; spawn
Definitions (Unihan)
  1. spawn
  2. roe
  3. fry
  4. Cangjie Input - Traditional
    NFAPP
  5. Cangjie Input - Simplified
    NMAPP

鯤 [鲲]

Jyutping gwan1
Pinyin kūn

Definitions (CC-CEDICT)
  1. fry (newly hatched fish)
  2. legendary giant fish that could transform into a giant bird 鵬|鹏[Peng2]
Definitions (CC-CANTO)
  1. fry (newly hatched fish)/legendary giant fish that could transform into a giant bird 鹏Péng [鹏]
Examples (Wiktionary)
  1. Mandarin
    北冥有鱼，其名为鲲。
    北冥有魚，其名為鯤。
    běi míng yǒu yú ， qí míng wéi kūn ．
    • In the northern ocean there is a fish; its name is Kun.