It was a newborn pup. I usually wake up when I hear any commotion from the tank at night from the babies being born and seperate the babies right away. Well this was the 4th litter in 5 nights and all my rays seem to like giving birth around 1-3 am. I was extremely tired and ended up sleeping through the whole thing. When I finally woke up it was too late for this little fella. I can't really seperate my rays to easy right now due to lack of space.