yea its the perfect size thats what i use, throw a sponge filter in there, and some plants. no gravel though. a cory is always good for a fry tank , he keeps it clean and wont go after the babies
Three years ago I bred guppies on a large scale for our LFS. I would have to disagree about the cory cats, I did see them eat some fry. So I don't know if I would trust cory cats with very small fry.