In particular, the water film can explain that iridescences are seen under several half-bubbles :they could be due to the initial turbulent state of the boundary layer.
It is slender-bodied and silvery with pinkish iridescence on its sides.
The dorsal scales a layer of dark (indigo-brown) pigmentation just below the surface on each scale that enhances the iridescence.
Males are usually somewhat larger and heavier, and with somewhat brighter plumage and more strongly pronounced iridescence of the cap.
Examples of iridescence include soap bubbles, butterfly wings and sea shells, as well as certain minerals.
I ask of divided brushwork not the objective rendering of light, but iridescence and certain aspects of color still foreign to painting.
The forewing ground colour is rich brown with strong coppery-bronze iridescence.
The under parts of these species lacks iridescence.
