How to Identify Southern Redbelly Dace

To identify Southern Redbelly Dace (Chrosomus erythrogaster), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal surface is typically olive to dark brown, transitioning to silvery-white on the ventral side. Two prominent dark lateral stripes run along the flanks; the upper stripe extends from the snout through the eye to the caudal fin base, and the lower stripe is often broader and more diffuse. During breeding season, males develop brilliant red or orange coloration on the belly, lower flanks, and the bases of the pectoral, pelvic, and anal fins. Females may show a duller reddish tint. Small, scattered melanophores (dark spots) may be present on the back.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Two distinct dark lateral stripes, Small, embedded scales, giving a smooth appearance, Small, upturned mouth, Vibrant red/orange belly coloration in breeding males

Dorsal fin

Single, short-based dorsal fin located posterior to the pelvic fins, typically with 8 rays.

Tail fin

Moderately forked caudal fin.

Pectoral fin

Pectoral fins are relatively small, located low on the body.

Distinctive fins

Pelvic fins are abdominal. All fins are typically clear to slightly dusky, with breeding males exhibiting red or orange bases on pectoral, pelvic, and anal fins.

Identification Tips

1. 1

   Lateral Stripes

   Look for two distinct dark lateral stripes running along the body. The upper stripe is usually narrower and more defined, while the lower one can be broader.

2. 2

   Belly Coloration

   During spring and early summer, observe the belly. Breeding males will display a striking red or orange coloration, which is a key identifier.

3. 3

   Scales

   Note the small, almost embedded scales, which give the fish a smooth, almost scaleless appearance compared to many other minnows.

4. 4

   Mouth Position

   The small, slightly upturned mouth is characteristic of a surface or mid-water feeder.

5. 5

   Fin Placement

   The dorsal fin is positioned relatively far back on the body, behind the pelvic fins.

Explore Southern Redbelly Dace