Eukarya - Domain of life whose cells have nuclei
Animalia - animals
Chordata - has Notochord, Dorsal nerve cord, Pharyngeal slits and Post-anal tail at some point
Actinopteryfii -ray-finned bony fishes
Siluriformes - catfish
Callichthyidae - armored catfish
Osteogaster - type of Corydoras