Thank you for the suggestions kim m and Coryman. Tonight I netted out two fish and ran my finger down their pectoral spines and I thought the problem was licked. These first two spines felt exactly like I suspected. Rough on the suspected C. duplicareus and smooth on the suspected C. adolfoi ...

Hello all,

In an effort to sort out some of the 20 odd Corydoras duplicareus or C. adolfoi I have around the house, I've brought home a 20X stereo microscope home from work for the weekend. According to the species description on this website for C. duplicareus Corydoras duplicareus , it should ...