> I picked up the poem from
> http://www.library.utoronto.ca/utel/rp/poems/pound3.html
> which also has a comment on it by Pound. Below is more from that page.

That page was edited, a fuller rendition is at
    http://www.english.uiuc.edu/maps/poets/m_r/pound/metro.htm

In the edited out sections Pound writes of color and haiku.

Someone wrote:
> From the fish to the shadow,

>From the shadow to the fish,
   Rick Parker