Le poisson ne pense pas
Le poisson est muet, sans expression
Le poisson ne pense pas parce qu'il sait tout
The fish doesn't think
The fish is mute, expressionless
The fish doesn't think because the fish knows everything
I leave you with the ink drawing of Canary damselfish and the lyrics of "this is a film", to illustrate the omniscience of the fish. No reason.