of his shiny entrails,
and the pink swim-bladder
like a big peony.
I looked into his eyes
which were far larger than mine
but shallower, and yellowed,
the irises backed and packed
with tarnished tinfoil
seen through the lenses
of old scratched isinglass.
They shifted a little, but not
to return my stare.
—It was more like the tipping
of an object toward the light.
I admired his sullen face,
the mechanism of his jaw,
This is a simile. It has a “like” in it. The author says the fish is like the tipping of an object. 

The Fish