Have you ever heard of Serapis?

Serapis Christus Roman 135 BCE

Okay….wait a second.  Why does Serapis Christus (year 3rd century BC) and the common image of Jesus of Nazareth (year 33AD) look so similar?  Many researchers say that the followers of Serapis were known as Christians.   Is this a true statement?  Could the photo above showing Serapis be the image used during the creation of Western biblical images?  I encourage you all to research the Ptolemy I period of 3rd century BC.  Thoughts?

Story of Serapis: http://www.touregypt.net/featurestories/serapis.htm

Greek Gods in Egypt:  https://en.wikipedia.org/wiki/Greeks_in_Egypt