Corydoras ourastigma (Long-nosed Smudge Spot Cory)

There are 4 other species of cory that may be confused with C. ourastigma at first glance. These are C. guapore, C. caudimaculatus, C. similis and C. spectabilis. They can be distinguished quite easily upon close examination, however. C. guapore, whilst exhibiting similar patterning, has a completely different body shape to ourastigma, having a much more rounded overall appearance. It also tends to spend a lot of time away from the aquarium floor, unlike ourastigma. C. caudimaculatus also has a …