Denison Barb Fish is characterized by a torpedo-shaped body with silver scales, a red line running from their snout, through the eye, back towards the middle of the body; and below the red line, a black line that runs the length of the fish to the tail. As they mature, a distinctive green/blue marking on top of the head develops. This species reputedly reaches a length of 15 centimetres but typically will only reach 9–11 centimetres. They are active shoaling fishes.
Habitat and threats
The species has an estimated range of 8,805 km2 (3,400 sq mi). S. denisonii is a benthopelagic species that is gregarious and shoals are known to occur in rocky pools with thick vegetation along their banks. They thrive in a subtropical climate in water with a 6.8–7.8 pH, a water hardness of 5–25 dGH and a temperature range of 65 to 79 °F (18 to 26 °C).
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