Got a photo? Identify fish instantly with the Fishby app.
Open the appDescription
The Southern Redbelly Dace (Chrosomus erythrogaster) is a small, colorful freshwater fish belonging to the family Leuciscidae. It is characterized by its slender body, two prominent dark lateral stripes, and, particularly during breeding season, vibrant red or orange coloration on its belly and fin bases. This species is an important component of headwater stream ecosystems, serving as both a consumer of algae and detritus and a food source for larger predators. Its ecological role is significant in nutrient cycling and maintaining stream health.
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
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.
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.
Scales
Note the small, almost embedded scales, which give the fish a smooth, almost scaleless appearance compared to many other minnows.
Mouth Position
The small, slightly upturned mouth is characteristic of a surface or mid-water feeder.
Fin Placement
The dorsal fin is positioned relatively far back on the body, behind the pelvic fins.
Habitat
- Water type
- freshwater
- Depth
- Typically found in shallow waters, often less than 1 meter (3 feet).
- Environment
- Prefers clear, cool, small to medium-sized headwater streams, creeks, and small rivers with moderate to high gradients. They are often found in areas with gravel or rocky substrates, abundant aquatic vegetation, and undercut banks or woody debris for cover. They tolerate a range of flow conditions but generally avoid strong currents in main channels, preferring quieter pools and runs.
- Geographic range
- Widely distributed across the central and eastern United States, primarily in the Mississippi River basin and Great Lakes drainage. Its range extends from New York west to Minnesota and south to Oklahoma and Alabama. Specific distribution varies by state, but it is generally found in the Appalachian foothills and central lowlands.
Aquarium Information
- Care level: intermediate
- Temperament: peaceful
- Diet: omnivore
- Minimum tank size: 20 gallons
- Temperature: 10-22 C (50-72 F)
- pH level: 6.5-7.5
- Hardness: 5-15 dGH
- Compatibility: Excellent with other small, peaceful coldwater fish such as other dace species, minnows, and some small darters. Avoid housing with aggressive or much larger fish.
- Special requirements: Requires a well-oxygenated tank with cool, clean water. Benefits from a planted tank with plenty of hiding spots (rocks, driftwood) and a fine gravel or sand substrate. A moderate current is appreciated. They are schooling fish and should be kept in groups of 6 or more to reduce stress and encourage natural behavior.
Wild Information
- Conservation status: least concern
- Seasonality: Breeding occurs primarily in spring (April-June) when water temperatures rise. Activity levels are generally consistent throughout the year, though they may seek deeper pools during extreme heat or cold.
- Market price: N/A
- Commercial importance: none
- Taste: N/A
- Texture: N/A
- Nutritional value: N/A
Key Facts
Breeding Tuberclesbehavior
During the breeding season, male Southern Redbelly Dace develop small, sandpaper-like bumps called breeding tubercles on their heads and pectoral fins. These are used in territorial displays and to stimulate females during spawning.
Nest Associatesbehavior
Southern Redbelly Dace are known to be 'nest associates' with other fish species, particularly creek chub (Semotilus atromaculatus). They often lay their eggs in the nests constructed by creek chubs, benefiting from the chub's parental care and nest defense.
Algae Eatersbehavior
Their diet consists largely of algae and detritus, making them important grazers in their stream ecosystems. They help control algal growth and process organic matter.
Coldwater Preferenceinteresting
This species thrives in cool, clear water, making it an indicator of good water quality in headwater streams. They are sensitive to increased water temperatures and pollution.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: not recommended
- Handling notes: Southern Redbelly Dace are small, delicate fish. Handle with wet hands to avoid removing their protective slime coat if caught. They are not aggressive and pose no threat to humans.
Similar Species
Northern Redbelly Dace
Chrosomus eos
The Northern Redbelly Dace (Chrosomus eos) is very similar. Key differences include the upper lateral stripe in C. eos often being less distinct or broken, and the lower stripe being more prominent and extending further forward. C. eos also tends to have a more northern distribution. Hybridization can occur where ranges overlap, making identification challenging.
Finescale Dace
Chrosomus neogaeus
The Finescale Dace (Chrosomus neogaeus) also has two lateral stripes, but the scales are even smaller and more embedded, making the body appear smoother. Its distribution is more northern, and it often inhabits boggy, acidic waters. The red coloration, if present, is typically less intense and more restricted than in C. erythrogaster.
Bluntnose Minnow
Pimephales notatus
While also a small minnow, the Bluntnose Minnow lacks the distinct double lateral stripes and vibrant red belly. It has a more rounded snout and a small, dark spot at the base of the caudal fin, which is absent in the Southern Redbelly Dace.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Cypriniformes
- Family
- Leuciscidae
- Genus
- Chrosomus
- Species
- erythrogaster
Explore Southern Redbelly Dace
Identify fish anywhere
Free on iOS, Android, and Web. Photo identification, full species details, and more.