Fishy Witness

They say that goldfish only have seven seconds of memory.
They swim by something, see it, and then forget.
Which is why you’ll rarely see a goldfish called as a witness in a murder trial.
Sure, some lesser-experienced and desperate district attorneys will try anyway, and they end up staring at a fish for an hour before the judge tosses their case out the window.
Still, when a Mafia boss says “Leave no witnesses” to his men, they take it seriously.
Flush it.
Cook it.
Feed it to the cat.
I just knock over the bowl.
Accidents can be caused.