Simile in ode to a large tuna in the market?

One possible simile in "Ode to a Large Tuna in the Market" could be:

"The tuna, slick and shiny as black marble,
A behemoth of the ocean, like an underwater mountain."

In the poem "Ode to a Large Tuna in the Market" by Pablo Neruda, the use of similes is less prevalent compared to other literary devices. However, there is one metaphorical phrase that can be considered as a simile:

1. "And you were singled out,
or chosen by the hand of a beautiful guitar."
In this line, the poet compares the act of someone selecting the tuna in the market to the strumming of a beautiful guitar. It implies a sense of deliberate choice and appreciation for the qualities of the tuna, just like how one would select a fine instrument to play.

Although this line does not explicitly contain the words "like" or "as" as typical similes do, it establishes a comparison between the tuna being chosen and the act of playing a beautiful guitar.