Reference: Field Guide to Dragonflies of Britain and Europe by K B Dijkstra
C. intermedium and C.scitulum are shown as living in Crete. Intermedium is endemic to Crete. Unhappily I cannot make out the features illusrated in the book from your photograph. I hope this sets you in the right direction.
It's not a Coenagrion and in fact is not in the Coenagriidae family. It's a Lestidae and in the genus Sympecma. While in western Europe we have only one species, S. fusca, in easter Europe also occur S. paedisca. Both can be distinguished by the sides of the thorax, in S. paedisca the dark part penetrate in a species of appendix into the clear part. But in your photo is not clearly visible this character so you must check the distribution of each one for see if in Crete lives both species or only one.