Samaki mmoja akioza, huoza wote

Translation: 
If one fish rots, it spoils all the others
Postproverbial: 
Samaki mmoja akioza,mtupe, asipotupwa ataozesha wenzake
Translation: 
If one fish rots, throw it away, otherwise it will spoil the others
Language - Region: 
kiswahili-east africa