- Side view adult.
- Side view adult.
- 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 dorsal fin: Notice that the dorsal fins are slightly connected; there are 11-13 dorsal rays.
- Close-up inside of mouth: Notice that there are no tongue teeth.
- Close-up anal fin: Notice that the 2nd anal spine is about equal in length to 3rd; there are 8-10 anal rays.
- The profile is strongly arched, the body is laterally compressed with the deepest part before the spiny dorsal fin.
- Close-up flank: Notice the dark horizontal stripes, broken and offset below the lateral line; there are 49-55 lateral line scales.
- Close-up underside of head: Notice that the chin is often bluish-purplish; otherwise breeders are similar to non-breeders.
- Side view of a young-of-year: Juveniles are similar to adults, but are less deep bodied and the horizontal stripes are not as pronounced.
- Alternative view of the dorsal fin.
- Alternative view of the flank.
- Alternate view of the mouth.
- Close-up breast: Notice the yellow color, hence the common name "yellow" bass.
Temperate Basses (Moronidae)
Mouth and snout: Terminal and oblique. Small teeth in patches on upper and lower jaws. No barbels. Body patterning, color, and scales: 6-8 dark horizontal lateral stripes over an olive, silver, or white body, often with a yellowish cast, especially ventrally. 49-55 ctenoid lateral line sclaes. Fins pigmented gray or brown.
Body shape and size: Body deep and laterally compressed. Typically 150-225 (6-9 in); maximum about 400 mm (16 in).
Tail, dorsal and other fins: Slightly forked tail. Two dorsal fins, slightly connected by a membrane, the anterior with usually 9 spines and the posterior with 1 spine and 11-13 rays. Pelvic fins thoracic. No adipose fin. Anal fin with 1 spine and 8-10 rays.
The yellow bass differs by having 3 anal spines and 6-8 dark horizontal stripes, by the conspicuous spine on the upper back part of the opercle, the saw-edged margin of the preopercle, and the 6-8 horizontal stripes. See also similar species information.
Similar to nonbreeders; yellow color may be more intense in breeders.
Similar to adults, but less deep-bodied.
White Bass X yellow bass (no photos); yellow bass X white perch reported from elsewhere, but not confirmed from Wisconsin (no photos).
|Bass, Striped||6-8 distinct black horizontal stripes, usually not offset|
|Bass, White||6-8 distinct black horizontal stripes, usually not offset|
|Bass, Yellow||6-8 distinct black horizontal stripes, often broken and offset above anal fin|
|Perch, White||Solid color; faint stripes may be present in juveniles|
|Bass, Striped||Rounded anteriorly and not arched; deepest part of body below spiny dorsal; more elongate and fusiform than others|
|Bass, White||Rounded anteriorly and not arched; deepest part of body below spiny dorsal; laterally compressed|
|Bass, Yellow||Somewhat arched anteriorly; deepest part of body below spiny dorsal fin; laterally compressed|
|Perch, White||Sharply arched anteriorly; deepest part of body before spiny dorsal fin; laterally compressed|
|Bass, Striped||Slightly separate or touching but not connected by membrane|
|Bass, White||Slightly separate or touching but not connected by membrane|
|Bass, Yellow||Slightly connected|
|Perch, White||Slightly connected|
Dorsal Rays (2nd Dorsal Fin)
|Bass, Striped||10-14, usually 11-12|
|Bass, White||12-51, usually 13-14|
|Bass, Yellow||11-13, usually 11-12|
|Perch, White||10-13, usually 11-12|
|Bass, Striped||2nd clearly shorter than 3rd|
|Bass, White||2nd clearly shorter than 3rd|
|Bass, Yellow||2nd and 3rd about equal in length|
|Perch, White||2nd and 3rd about equal in length|
|Bass, Striped||9-12, usually 10-11|
|Bass, White||11-13, usually 12|
|Bass, Yellow||8-10, usually 9|
|Perch, White||8-10, usually 9-10|
Lateral Line Scales
|Bass, Striped||53-65, usually 57-63|
|Bass, White||52-60, usually 54-58|
|Bass, Yellow||49-55, usually 49-51|
|Perch, White||44-52, usually 46-4|
|Bass, Striped||Two elongated patches on rear of tongue, distinctly separate|
|Bass, White||Single oval patch on rear of tongue, ocassionally with medial division|
|Bass, Striped||Very similar|
|Bass, White||Very similar|
|Perch, White||Very similar|
|Bass, Striped||Not established in WI; speciment reported but unconfirmed in the Fox River, Kenosha County, presumably a stray from stocked populations in Illinois|
|Bass, Yellow||Moderately similar to yellow perch, ruffe, sunfish family; differs from yellow perch and ruffe by having 3 (vs 2) anal spines and light olive, silvery, or whitish body without obvious vertical bars or mottling, and from sunfishes by the conspicuous spine|