Eating fish with the current fishing method is haram?

[good logic]

Peace Rilum.
Your question about fish dying after we catch them does not make them dead before we caught them. So if you catch them alive, then there is no problem.
Whether they cannot breathe or the heat of cooking them kills them is irrelevant. They were not dead before they were caught, so what is the problem?
5;3 ,even if you apply it to fish, (And it does not as 5:1 clearly identifies !Anaam( live stock animals as the subject of 5:1-3) it should not be a problem if one was fishing live ones.
GOD bless you.
Peace.

[Rilum]

You may be right, God knows best.
Thank you all for your answers.
Peace be upon you