i would say syn more hypo all ways in the heat of things ,were as the jag is more layed back i now have a male jag to and the female jag mates with both in turn!The most noticeable thing other than the colour is his mouth is twice the size of the adult syn, thicker lips, almost jag like so he can take larger food even at this size he so hungry all the time more than the others ,i use to hand feed him, i think twice now cos he thought my finger was white bait lol,since my last post in jan i would say hes twice as big, i feed whole tank evey 2-3 days frozen food may be pellets inbetween he would eat till he went pop if i let him ..lol