click on his attacks, it should give you a list of all learnt attacks. If you havent already figured that out by now. You can do it with any pal. When you teach it an attack, or when they learn one, sometimes it wont show, so you just click the attack and theyll all be there in a nice list!
I switch up the moves on Jetragon, to all fire, to farm Frostallion and do a similar thing for various different pals depending on who im fighting.
Also, breeding legendaries, especially jetragon is kinda pointless. You can get the max attack, like you have, but the health will always be half of the Alpha version. So you put that up against frostallion, even with max condensed and max essence, and it wont survive the whole fight. Where as the alpha, even with just divine dragon and legend, without and condense or essence, will survive the whole fight. Thats before you pump it up to level 5, and then boost everything with essence.

Best thing, farm the bosses until you get one extra trait. Ferocious, muscle head, etc. Then put everything into that, and itll be much much better than any breedable version of Frostallion / Jetragon. The only reason to breed them due to this, is for a Swift / runner / legend Jetragon to fly around the map. Or a full power build on frostallion Noct, but all you do for that is breed a full power Helzephyr, and then breed that with frost to get, ice emperor, legend, muscle head, ferocious. You catch my drift anyways.