Red-eye, or Rudd (Leuciscus erythrophthalmus), a fish belonging to the same genus as roach, chub, and minnow. It is common in lakes, slow rivers, and fens, in many parts of Europe and in England. It much resembles the Roach (q.v.), but is shorter and deeper. It is richly coloured, the name Rudd referring to the colour of the fins, the name Red-eye to that of its iris. The fish is better eating than the roach, and sometimes attains a weight of 2 lb.