Redside Dace Care Guide
Clinostomus elongatus · Freshwater Fish
What Redside Dace look like
The Redside Dace (Clinostomus elongatus) exhibits a slender, fusiform body shape, typically reaching a maximum adult size of 5 inches. Sexual dimorphism is pronounced during the breeding season, with males developing a striking vivid red to crimson lateral stripe that runs from the head to the tail, contrasting sharply against their otherwise olive-silver body coloration. This lateral stripe is particularly prominent in breeding males, serving as a visual cue during courtship. The species possesses a well-defined lateral line system, which aids in detecting vibrations in the water, and features a small, terminal mouth equipped with fine, pharyngeal teeth adapted for its carnivorous diet. The dorsal fin is situated towards the rear of the body, and the caudal fin is forked, enhancing its agility in swift currents. Defensive adaptations include a streamlined body that allows for rapid escape from predators, as well as a schooling behavior that provides safety in numbers.
Behavior & temperament
Redside Dace are primarily found in clear, cool streams and rivers, exhibiting a preference for the upper water column, where they can be seen darting among submerged vegetation and rocks. They are social fish, often forming small schools, particularly in juvenile stages, which provides them with protection from predators. Their behavior is characterized by quick, agile movements, and they display a hierarchical structure within schools, with dominant individuals often leading the group. Breeding occurs in spring, where males engage in elaborate courtship displays to attract females, typically involving the display of their vivid coloration. The species is known to be relatively peaceful but can exhibit territorial aggression during the breeding season, particularly among competing males.
Diet & feeding
In the wild, Redside Dace are carnivorous, primarily feeding on small invertebrates, such as insect larvae and crustaceans. In captivity, they require a diet rich in protein, including high-quality flake food, frozen or live foods such as daphnia and bloodworms to meet their nutritional needs.
Behind the name
Clinostomus (from Greek, 'klinein' meaning 'to lean' and 'stoma' meaning 'mouth'); elongatus (Latin for 'elongated').
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Redside Dace?
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