The work is titled "Good Wish from Big Fish". The artist is Shih-Yi Yang.

藝術品名為「大魚的祝福」，藝術家是楊士毅：

https://www.tainan.gov.tw/News_Content.aspx?n=13370&s=3736855

Tyng-Ruey Chuang at 2019-04-09T09:20:23Z

It kind of reminds me of this thing in Barcelona:

JanKusanagi at 2019-04-09T13:26:55Z