Good example, Papa, of one to be concerned about.
Here are 3 Sanke Mat McCann supplied to me for learning purposes a year ago as approx. 7-inch tosai. They are now in 16" to 18" range. First, focus on the top fish, the Sanke with the round spot on his side. (Yes, it is male.) Along the edge of the rear-most step you can see a "fringe" of scales. If you look very closely (especially in the second photo), just above each of the scales forming the hanging fringe on the rear-most step, you can see white in the next row of scales. That's white, not a reflection. Mat predicted a year ago that this is what would occur. The fish has perhaps two years to go, but probably less. The other heavily white one is another male showing Hi very high up on his side. Query: Has it stabilized such that the Hi will remain pretty much as you see it now? If you wanted a male Bekko, which of these two would you select?
...BTW, the third one, the long skinny one with heavy Hi, is female. Different lesson for another day.