Thanks for your detailed description. Very interesting so say the least.
Can you post some top view work you have done?
Origianlly, I thought you would wake up one day and say, "l'm going to master piece a wonderful Showa this week and then Shiro Utsuri next week and then move onto Kumonryu (notice my taste?) and so on. HOWEVER, it looks like the fish you have available to photo can dictate what you produce.
I'm sure you can change the pattern on the fish randomly with your computer program BUT now I think just how unique your style is. You are actually producing enhanced pieces from actual fish! Even better!
Do you go on tour? I don't imagine you would be bowling every fish you want to do art on and then showing them in a side viewing tank for photographing. IS IT AN UNDERWATER CAMERA?
I imagine your talent could be in high demand. You know, visiting the home of Steven Speilberg and photoghraphing is prized Koi and then producing art to be hung in his library or media room. YOU SHOULD KNOW ME by now! Thinking big.