Well spade tails in general can be found however most are, in fact, young VTs. True spade tails don't have very long fins. They pop up in PK form on occasion.
Your boy is thick, big, and TBH he looks like he has fighter blood. However at the same time his dorsal reminds me of a show PK. I still lean towards fighter blood though. Perhaps hybrid.
Who am I? Well I am a Junior Member of the International Betta Congress and a breeder of white HMPKs, red dragon HMPKs, black/red dragon HMPKs, metallic multi HMPKs, blue masked HMPKs, and now multi color HMs. Soon to add black HMs. I will be showing in New Breeder class in fall of 2012.