Corydoras fish swim to the surface primarily to gulp air, as they possess a specialized swim bladder that allows them to extract oxygen from the air. This behavior is particularly common in low-oxygen environments where dissolved oxygen levels in the water are insufficient for their needs. Additionally, they may surface to explore their surroundings or find food.
Spotted corydoras was created in 1872.
Corydoras simulatus was created in 1970.
Corydoras ehrhardti was created in 1910.
Sixray corydoras was created in 1970.
Corydoras evelynae was created in 1963.
Pygmy corydoras was created in 1966.
Corydoras undulatus was created in 1912.
Guapore corydoras was created in 1961.
Masked corydoras was created in 1914.
Panda corydoras was created in 1971.
Sailfin corydoras was created in 1913.
Corydoras narcissus was created in 1980.