Oops, seems like your images are not working, gunna have to copy/paste for those.. Ok after looking i think your dorsal stripe is a tad..small, are you sure hes an adult? what is his weight? You should consider fattening him up more before introducing him to a female for breeding.. As well your first is quite skinny. The giant is very nice looking. How old is the group, the 1st and 2nd seem to be much smaller than usual, unless they are not adults yet..