Zygus Osteogaster
Remarks: Zygus Osteogasters, also known as black band Osteogasters, are long, robust Corydoradinae with a thick band running along their back and a small spot of orange near their shoulder. They can be distinguished from their close relative, O. rabauti, by having a green shine over their scales and a band that does not extend into their caudal fin. In the wild, they inhabit small tributaries in both northern Peru and eastern Ecuador.Ā
Ā Zygus Osteogasters were previously classified as Corydoras zygatus, but were reclassified as Osteogaster zygatusĀ upon publication of a phylogenomic analysis in 2024 that reclassified many species in the Corydoradinae subfamily.
Ā Corydoradinae are small, peaceful catfish that are active shoalers and will stay near conspecifics, making for a lovely sight.Ā 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.
Ā 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 CorydoradinaeĀ present in the aquarium and only mix species if one has the space to keep at least six of each.
Ā CorydoradinaeĀ 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.
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Description
Remarks: Zygus Osteogasters, also known as black band Osteogasters, are long, robust Corydoradinae with a thick band running along their back and a small spot of orange near their shoulder. They can be distinguished from their close relative, O. rabauti, by having a green shine over their scales and a band that does not extend into their caudal fin. In the wild, they inhabit small tributaries in both northern Peru and eastern Ecuador.Ā
Ā Zygus Osteogasters were previously classified as Corydoras zygatus, but were reclassified as Osteogaster zygatusĀ upon publication of a phylogenomic analysis in 2024 that reclassified many species in the Corydoradinae subfamily.
Ā Corydoradinae are small, peaceful catfish that are active shoalers and will stay near conspecifics, making for a lovely sight.Ā 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.
Ā 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 CorydoradinaeĀ present in the aquarium and only mix species if one has the space to keep at least six of each.
Ā CorydoradinaeĀ 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.
