Remarks:  Rabaut's Osteogaster, also known as the rusty Osteogaster/Cory, is a wonderful little catfish that originates from tributaries in Brazil, but can be found in a few other countries such as Columbia. They hold a very natural beauty with their silver or tan bodies with a thick black/gray band running along their back and a small spot of rusty orange near their shoulder. They can be distinguished from their close relative, O. zygatus, by how the Rabaut's Osteogaster lacks a green shine over their scales that is present in O. zygatus and by how their dark band just barely extends into their caudal fin. The Rabaut's Osteogaster also is shorter bodied than O. zygatus. While they are a hardy species, the same usual rules for Corydoradinae care still applies if they are to thrive in captivity.

    Rabaut's Osteogaster were previously classified as Corydoras rabauti, but were reclassified as Osteogaster rabauti 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.