Meaning: being uncomfortable and restless
Example: Our new teacher looked like a fish out of the water, nobody was aware of the issue. Read on
Meaning: something irrelevant that distracts you from something important
Example: The new law is just a red herring meant to draw our attention away from the issues regarding education. Read on
Meaning: to have a suspicion that something is wrong
Example: The manager smelled something fishy and started an investigation. He eventually found that 3 of the 4 employees were stealing from the store. Read on
Meaning: It refers to failing organizations and how the blame of it should be on its 'head' that is its leadership.
Example: The company was bound to be closed sooner or later considering the kind of mangers that they had hired. A fish rots from the head down after all. Read on