Ultraviolet visual pigment in a vertebrate: a tetrachromatic cone system in the dace

Science. 1983 Dec 2;222(4627):1021-3. doi: 10.1126/science.6648514.


Microspectrophotometric measurements of optically isolated photoreceptors in the Japanese dace, a cyprinid fish, revealed four spectroscopically distinguishable cone pigments and one rod pigment. A visual pigment that absorbs in the near ultraviolet was found in small single cones.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cyprinidae / metabolism*
  • Photoreceptor Cells / analysis*
  • Retinal Pigments / analysis*
  • Rod Cell Outer Segment / analysis
  • Spectrophotometry, Ultraviolet


  • Retinal Pigments