Which lines in this excerpt from elizabeth bishop's the fish show that the fish has given up struggling for survival after living a

I'll just post an excerpt of the poem "The Fish" by Elizabeth Bishop. The excerpt would show that the fish has given up struggling for survival after living a hard life.

"I caught a tremendous fish 
and held him beside the boat 
half out of water, with my hook 
fast in a corner of his mouth. 
He didn’t fight.                        ⇒ The fish gave up
He hadn’t fought at all.           ⇒ struggling for survival
He hung a grunting weight,    ⇒ after living
battered and venerable          ⇒ a hard life
and homely. Here and there 
his brown skin hung in strips 
like ancient wallpaper,"

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