it will be fine.
dont use to small of a hook or they might swallow it,then you have problems.
dont add salt to the bucket,to much stress from the get go.
catch,add to air and bucket like said.
use the water the fish came from.
aclimate it to the tank water.
think thats it.

oh and to the killer,thats sad advice to kill it if you hurt it.
put it back and give it a chance.
dont use to small of a hook or they might swallow it,then you have problems.
dont add salt to the bucket,to much stress from the get go.
catch,add to air and bucket like said.
use the water the fish came from.
aclimate it to the tank water.
think thats it.
oh and to the killer,thats sad advice to kill it if you hurt it.
put it back and give it a chance.