The adult size is 6½ cm for males and a slightly larger 7 cm for females (2½ to 2¾ inches). Females have a slightly higher body frame than males in accordance with their larger abdominal region. Their average life span is 10 years. In common with most Corydoras the dorsal, pectoral and adipose fins have an additional sharp barb and have a mild poison which causes fish which try to attack them to get stung. A brownish-orange patch is usually present on the head, just before the dorsal fin, and is its most distinctive feature when viewed from above in the stream. Their upper sides are often a greenish color, which is the reason another common name for this fish is the green corydoras.
Like many other catfishes, females are larger than males in this species. They are found in quiet, shallow waters with soft bottoms that can sometimes be heavily polluted by clouds of disturbed mud from the bottom, but it also inhabits running waters. In its native habitat, it inhabits waters with a temperature range of 25 °C to 28 °C (77 °F to 82 °F), pH 6.0–8.0, and hardness 5 to 19 DGH. Like most members of the genus Corydoras, these catfish have a unique method of coping with the low oxygen content that prevails in such environments. In addition to utilizing their gills like any other fish, they rapidly come to the surface of the water and draw air in through their mouth. (sometimes giving their owners a playful splash!)
- Very peaceful and hardy addition to almost any aquarium
- Compatible with peaceful invertebrates too large to be considered prey
- Thrives in schools in well-planted aquaria
- Distinctive coloration and group schooling behavior.
- Temperature: 70° - 81° F (21° - 27° C)
- pH: 5.5 - 7.2. Softer water is preferred, but this fish usually very hardy and is somewhat flexible as long as sudden changes are avoided.
- KH: 0 - 15 dKH
- Minimum tank size: 15 gallons for a school of 5
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