Working on Symmetrical Bettas

Well, I'm thinking of working on the three unpaired fins of bettas: dorsal, caudal and anal fin. In my plans, I have two of the three fins down. The sailfin trait for the dorsal and the rosetail for the caudal. Now, I'm thinking of working of the anal fin. Thus, breeding for the symmetrical trait will deal with the anal fin.

Here are some links about symmetrical betta.

The Plakat Trilogy

Proposal for Adjustment of the IBC Plakat Standards

I see some work in progress in the anal fins in a handful of my bettas. They show a more rectangular anal fin than a trapezoidal of a typical asymmetrical betta. 

Here are some pictures:

Here is the most prime example of the anal fin I'm looking for. This has the rectangular shape. The outline is smooth from the front part of the anal fin to the back. Aside from the anal, this has the dorsal and D-caudal to boot.

These two have rectangular anal fins. However, as you can see, the anal fin is not as smooth from the front to the back. This hints that the rear part of the anal fin will extend in the future...leading to an asymmetrical form. The extreme branching of the Copper Red Rosetail HMPK causes the anal fin to wrinkle and further make the outline more bumpy.

With more work, I will try to bring the form close to the first fish.

UPDATE (10/26/2013)
I got several new breeders from a friend. These fish are gonna be symmetrical!!! I'm excited to breed them!!! Then, breed them with my fish!!!!

Moreover, I am planning to breed the Platinum male to the DTPK daughter of the solid Copper male. If I'm lucky, he'll produce more symmetrical fish for me.