Green Aeneus Osteogaster (Osteogaster aeneus)

Remarks:  Green aeneus Osteogaster are one of, if not the most popular Corydoradinae species in the hobby. They have been captive bred for so long that they have become very tolerant of a wide range of water parameters and come in different color morphs and fin types such as albino or long-finned making them the perfect starter Corydoradinae. Green aeneus Osteogaster were previously classified as Corydoras aeneus, but were reclassified as Osteogaster aeneus upon publication of a phylogenomic analysis in 2024 that reclassified many species in the Corydoradinae subfamily.   Corydoradinae are small, peaceful catfish that are active shoalers and will stay near conspecifics, making for a lovely sight. They feed by searching through sand with their barbels, making such a substrate necessary for their long-term health. Gravel substrates tend to be abrasive and damage the barbels, leading to infections and an inability to find food.   While these friendly catfish are willing to swim with other species of Corydoradinae different from their own, this does not provide the same social need as being kept with members of their own species. Because of this, it is highly recommended to keep at least six of each species of Corydoradinae present in the aquarium and only mix species if one has the space to keep at least six of each.   Corydoradinae are often looked at as "scavengers," but they should be treated in a similar fashion as the rest of your fish. They are omnivores and require a mixed diet. Sinking prepared foods are readily accepted, as are frozen and live foods such as brine shrimp, blackworms, and bloodworms.