What is Red Fish?
1.
red chewy candy that the coolest people alive can only eat, but hold on tight because they jump out of your hands often ; even when you dont know it !
example:
name olivia can eat red fish
See
2.
This is a term that is often used by plummers referring to a bloody feminine hygiene product that has been flushed, therefor causing an obstruction.
Sir, I think I found yer problem! The wife musta flushed a red fish down yer shitter!