Did you know fantastic help is an anagram of Planet Catfish? This forum is for those of you with pictures of your catfish who are looking for help identifying them. There are many here to help and a firm ID is the first step towards keeping your catfish in the best conditions.
The first one looks like a juvenile C. delphax, the second a male C. elegans and the third is an undescribed species from the so called 'Elegans group, this one I know because I have the same fish, it comes from Colombia and produces the smallest eggs I have ever seen from a Cory at 0.7 mm diameter.