Goldeye
  • Side view adult.
  • Side view adult.
  • Side view of an adult specimen found dead on the surface; the eye is damaged and the color is faded.
  • Top view adult.
  • Bottom view adult.
  • Head-on view adult.
  • Close-up flank.
  • Close-up head.
  • Close-up mouth and snout.
  • Close-up tail.
  • Close-up dorsal fin.
  • Close-up anal fin.
  • Close-up pectoral fin.
  • Close-up pelvic fin.
  • Close-up underside: Notice the fleshy keel from vent to isthmus.
  • Close-up of underside of head of a mooneye (identical to goldeye) showing the gular membrane and the overlapping gill covers..
  • Notice that the dorsal fin origin is even with the anal fin origin; the dorsal profile is flat and anal fin is long.
  • Close-up of dorsal fin: There are 9-10 dorsal rays.
  • Close-up of head: The vertical line at the end of the maxillary is showing how it extends past the middle of the eye.
DescriptionSimilar Species
Family
Mooneyes (Hiodontidae)
Body
Mouth and Snout: Mouth terminal and obliquely angled upwards with numerous small teeth. Mouth extends to the middle or back of the eye. The eye is relatively large. No barbels. Body Pattern: Solid silvery or golden. No markings on body or fins. The iris of the eye is yellow. Obvious numerous cycloid scales. Body Shape: Laterally compressed. Typical adult size is 250-350 mm TL, with a maximum of about 500 mm (12 inches).
Fins
Forked tail. Single dorsal fin with no spines, located on the posterior portion of the back. Dorsal fin has 9-10 rays. Pelvic fins abdominal with axillary processes. Long anal fin (length of anal fin base much longer than longest anal ray). No adipose fin. The origin of dorsal fin is even with or slightly behind the origin of the anal fin.
Distinguishing Characteristics
Dorsal fin with 9-10 rays, origin even with or slightly behind origin of anal fin. Maxillary extends beyond middle of eye; teeth in mouth and on tongue; dorsal profile between dorsal fin and head largely flat, especially in larger specimens. Gill slits extend far forward ventrally, with the two gill covers overlapping posteriorly and covered by gular membrane anteriorly. Also has a large eye with yellow iris. 57-62 lateral line scales. A fleshy unscaled keel extends from the anus to the gill area. The origin of dorsal fin is even with or slightly behind the origin of the anal fin. See also similar species information.
Breeding Adults
Same.
Juveniles
The body and fins are silver with no obvious markings. The iris of the eye is yellow.
Hybrids
None known from Wisconsin.
Compare Similar Species
Keel
GoldeyeVentral fleshy (no scales) from vent forward to isthmus
MooneyeVentral fleshy (no scales) from vent forward to pelvic fins
Dorsal Fin
Goldeye9-10 rays; origin even with or slightly behind origin of anal fin
Mooneye11-12 rays; origin well forward of origin of anal fin
Axillary Process on Pelvic Fin
GoldeyePresent
MooneyePresent
Maxillary
GoldeyeExtends beyond middle of eye
MooneyeEnds short of or extends to middle of eye
Mouth/Teeth
GoldeyeTeeth in mouth and on tongue
MooneyeTeeth in mouth and on tongue
Dorsal Profile Between Dorsal Fin and Head
GoldeyeLargely flat
MooneyeMore rounded
Lateral Line
GoldeyePresent
MooneyePresent
Gill Slits
GoldeyeExtend far forward ventrally with the two gill covers overlapping posteriorly and covered by gular membrane anteriorly
MooneyeExtend far forward ventrally with the two gill covers overlapping posteriorly and covered by gular membrane anteriorly
Anal Fin
GoldeyeLong, length of anal fin base much longer than longest ray
MooneyeLong, length of base much longer than shortest ray
Similarity Index
GoldeyeN/A
MooneyeVery similar
Comments
GoldeyeModerately similar to shad family (Alosa, Dorosoma), and deep-bodied shiners of the minnow family (Cyprinella, Luxlilus, Notemigonus, Scardinius)
MooneyeSee 1st row.
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