Especially if he is older - which I could kind of tell as his fins are more "wrinkled" as was my old man fish's, Georgie.
Why not check for an HM? :p I saw... a purple and white butterfly HM still sitting in Big Al's. There was also a yellow HM, a blue HM, tri-colored CT, and a CT that looks like your boy LOL :)
I am currently spawning two - Janey and Ares. I suspect wide finned VT from this pair, but it is also because finding an HM female is hard -.- as is a doubletail :/
(Ona side note...If you find me a doubletail lady, I WILL LOVE YOU FOREVER!!!
For a VT... If you bred VT that is... Look for a male who has an even caudal (yes, tail fin :) ), a medium length anal and a wider dorsal. One who holds his fins gracefully too :) Stuck together is not all that great especially if it really isn't clamped (trust me, I know).
Are you wanting to breed color or finnage?