It is about 5-6" long has nice blue coloration on the top of its body that can't be seen in the picture as well as it looks in person. Ive had it about a year now and i bought it with a smaller less colorful festivum. The LFS said they came to the store together.
I thought there were several different species of them, another member on here had one that looked different from mine, looks like it had spots and not a stripe like mine