Fun fun fun.
I would not use a net, especially on that type of fish. Lower the water level in the tank as much as possible and either grab it out with a clean t-shirt or something similar or try to get it directly into a bag.
If you do use a net make sure it's one of the very long soft ones, or else spines can get caught and you will more easily damage his body and eyes.
You shouldn't have to add anything for his slime coat, good water quality should be sufficient for healing.
I would not use a net, especially on that type of fish. Lower the water level in the tank as much as possible and either grab it out with a clean t-shirt or something similar or try to get it directly into a bag.
If you do use a net make sure it's one of the very long soft ones, or else spines can get caught and you will more easily damage his body and eyes.
You shouldn't have to add anything for his slime coat, good water quality should be sufficient for healing.