That would be Goldfish Bowl at the Portland Art Museum...
Here's Roy Lichtenstein's Goldfish Bowl currently on view at the Portland Art Museum. It's on loan so if you want to see it in person you'll need to plan ahead since the owner could decide to take it back at any moment.
As Lichtenstein did in a number of his images, he's triggering off of another artist's work. Here it's Matisse's Goldfish and Palette. Matisse had created two goldfish scenes in 1914. This one is an abstraction of an earlier more conventional view. He's outlining the forms in black as Lichtenstein repeated in his bronze sculpture.