- Side view adult.
- Side view adult held by Phil Cochran, St Marys University of Minnesota.
- Side view adult.
- 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 ventral area: The ventral keel reaches from anus to isthmus.
- Notice that the gill rakers are fused to form a sponge-like matrix; gill arch is removed from the body for clarity.
- The body is fusiform, there are 95-103 lateral line scales
- Close-up mouth: The mouth is terminal, there are no barbels.
- Close-up dorsal fin: Notice the spine; there are 8 dorsal rays.
- Close-up anal fin: Notice the spine; there are 12-13 anal rays.
- Side view of a young-of-year: Juveniles are similar to adult, but have a proportionally bigger eye.
- Close-up head: Notice the downward pointed eye located below the level of the mouth.
- View of the ovaries of a ripe female: Notice large paired ovaries and the numerous small eggs.
- The intenstine is greatly elongated and spiraled.
Mouth and Snout: Terminal mouth without any teeth. No barbels. Body Pattern: Solid gray on back, flanks silvery, grading to white on belly. Fins with somewhat darker pigmentation. Numerous small cycloid scales. Body Shape: Fusiform. Typical adult size is 400-700 mm TL (1.3-2.3 ft), with a maximum of about 1300 mm (4.3 ft).
Forked tail. Single short dorsal fin with a single spine (technically a spinous soft ray). Pelvic fins abdominal. No adipose fin. Anal fin with a single spine (spinous soft ray) and with 12-13 soft rays.
Fusiform body with a ventral keel from anal fin to isthmus. Dorsal fin with a single spine without serrations and with 8 soft rays; anal fin with a single spine without serrations and with 12-13 soft rays. Terminal mouth without barbels. 95-103 lateral line scales; gill rakers numerous and fine and fused together to form a sponge-like matrix. See also similar species information.
Similar to adults, but lacking spines in fins. Eye proportionally larger in small juveniles.
None known from Wisconsin.
|Buffalo, Bigmouth||Deep, laterally compressed|
|Buffalo, Black||Deep, laterally compressed|
|Buffalo, Smallmouth||Deep, laterally compressed|
|Carp, Common||Deep, laterally compressed|
|Carpsucker, Highfin||Deep, laterally compressed|
|Carpsucker, River||Deep, laterally compressed|
|Goldfish||Deep, laterally compressed|
|Quillback||Deep, laterally compressed|
|Carp, Bighead||From anal fin to pelvic fins|
|Carp, Silver||From anal fin to isthmus|
|Buffalo, Bigmouth||Terminal, subterminal or inferior|
|Buffalo, Black||Terminal, subterminal or inferior|
|Buffalo, Smallmouth||Terminal, subterminal or inferior|
|Carpsucker, Highfin||Terminal, subterminal or inferior|
|Carpsucker, River||Terminal, subterminal or inferior|
|Quillback||Terminal, subterminal or inferior|
|Buffalo, Bigmouth||22-32 rays; first few rays elongated|
|Buffalo, Black||22-32 rays; first few rays elongated|
|Buffalo, Smallmouth||22-32 rays; first few rays elongated|
|Carp, Bighead||1 spine in adults, 8 rays|
|Carp, Common||1 serrated spine, 15-23 rays|
|Carp, Grass||7-9 rays|
|Carp, Silver||1 spine in adults, 8 rays|
|Carpsucker, Highfin||22-32 rays; first few rays elongated|
|Carpsucker, River||22-32 rays; first few rays elongated|
|Goldfish||1 serrated spine, 15-19 rays|
|Quillback||22-32 rays; first few rays elongated|
|Buffalo, Bigmouth||7-10 rays|
|Buffalo, Black||7-10 rays|
|Buffalo, Smallmouth||7-10 rays|
|Carp, Bighead||1 spine in adults, 13-14 rays|
|Carp, Common||1 serrated spine, 4-6 rays|
|Carp, Grass||8-10 rays|
|Carp, Silver||1 spine in adults, 12-13 rays|
|Carpsucker, Highfin||7-10 rays|
|Carpsucker, River||7-10 rays|
|Goldfish||1 serrated spine, 5-6 rays|
Lateral Line Scales
|Carp, Bighead||53-80; long and fine|
|Carp, Silver||Fused into sponge-like matrix|
|Buffalo, Bigmouth||Moderately similar|
|Buffalo, Black||Moderately similar|
|Buffalo, Smallmouth||Moderately similar|
|Carp, Bighead||Very similar|
|Carp, Common||Moderately similar|
|Carp, Grass||Moderately similar|
|Carpsucker, Highfin||Moderately similar|
|Carpsucker, River||Moderately similar|
|Carp, Bighead||Not yet confirmed from WI waters (two anecdotal records), but well-established further south in the Mississippi River and likely to be encountered in WI in the future.|
|Carp, Grass||Not established in WI; present only as a stray from further south or from illegal introductions|
|Carp, Silver||Not yet confirmed from WI waters, but well-established further south in the Mississippi River and likely to be encountered in WI in the future.|