The Nakaya Clinic at Aesthetic Bay brought us a new shape — the finless dorsal fin (ryogiri, thanks for the name Dan!). Thomas of Penucopia was was kind enough to lend us his for some photos.
The Pelikan was added in in case you have no other Nakaya to compare against. It’s what I had on hand, sorry.
Unfortunately I don’t have a Dorsal Fin version 1 or 2 to compare against in photos. However, I was able to compare the two in person and it’s the same section on both. The big difference is the fins.
Sorry for the mediocre phone photo quality. The borrowed pens are on their way to their new home and it didn’t feel right to delay them for better photos.