sái-ku屎龜

a kind of fish with silver-gray color

a kind of fish with silver-gray color, black dots, a small mouth and no teeth; dung beetle

English Wiktionary, “屎龜” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%B1%8E%E9%BE%9C · confidence: Medium (Wiktionary)