Proverb cautioning that a single unethical person can corrupt an entire community or team.
One rotten fish spoils the whole catch / One bad actor ruins group reputation
fish mmoja akioza wote wameoza
"Ondoa mwizi huyo kikosini kwani samaki mmoja akioza wote wameoza."
Translation: Remove that thief from the team for one rotten fish spoils the whole catch.