The various catfish of the genus Aspidoras are a recent division from the Corydoras, and differ in having a more elongated body, as well as a "supraoccipital fontanel". If you can figure out what that means, and where it is, bonus points to you. Despite the longer body shapes, the name "Aspidoras" does not refer to a snake (Asp), but instead to a shield -- Aspis is the Latin word for shield, and refers to the heavy scales that these, and all Corydoras type catfish have.
Other than having a slightly different body shape, most Aspidoras tend to be a bit smaller than Corydoras. They can be maintained in much the same way, and should be treated as Corydoras. Aspidoras will do best in small schools of at least a half dozen individuals. They should not be maintained with aggressive or larger fish that may see them as meals.

These fish are an apparently undescribed species traded under the name of "Senger's Aspidoras," and given the C-Number designation of C118.