The Living Fish
Scholars have said that seeing a living fish floundering in an unknown place may indicate that a servant or a woman's circumstances are changing for the worse in worldly or religious matters. If a fish emerges from one's urethra, it may signify the birth of a female child, while its emergence from the mouth might mean the dreamer will utter confusing words.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam