Trout
A variant of Indian Runner (Anas platyrhynchos domesticus)

A lightened, dilute version of the mallard pattern giving a softer, paler stippled coloration reminiscent of a trout's flank.
Keeper tips for this variant
Trout color reads best in good light — provide open daylight range, and select for clean, evenly diluted markings rather than dark mallard-type contrast.