the.com/rudd

means A European freshwater fish (Scardinius erythrophthalmus) related to carp and roach, with reddish fins and golden-bronze scales, that also became an invasive pest in waters like Australia and New Zealand.

from The fish name comes from Old English 'rudd' or 'rudde', tied to the root 'read' meaning red — a nod to its ruddy fins and reddish eye, the same ancient color-word that gives us 'ruddy' and 'rust'. Long before any Australian politician borrowed the surname, this small, coppery-finned fish was swimming European rivers under a name describing exactly what it looked like.