Loretta Cory,yellow Cory and a blue eyed rabauti Cory.

The Loretta cory has a tall dorsal fin and I noticed one has a black streak at the front of its dorsal and it looks amazing
The yellow corys like to swim up in the water in order to clean the plants,which I like since corys are normally bottom dwellers unless they are surfing.
The rabauti Cory had a worn down tail and dorsal fins when I purchased him,but with eyes like that how could I refuse.