Angelfish (Pterophyllum scalare), 2021

It's really been a while since my last original design, as I was so busy with so many different matters. Back in September I began the designing of this model using my edge-river method, and the precreasing of it was done in early October, but then I was totally sidetracked by the development of Oriedita, so only until now that I have finally finished folding this model.

I have done mid-level complexity fish designs before, but this is my first super-complex fish design. Originally, it was Drew Heskett's work on fish that motivated me into designing complex fish. I can't quite remember why exactly I settled with angelfish as my subject, but probably because I want to maximize the area efficiency, so I choose a fish that has four longer fins that can naturally be allocated at the four corners of the paper.

Then comes the interesting question: what should be allocated at the center of the paper? In this case, the front side has several tiny details (eyes, jaw, and pectoral fins) that will be much easier to create from the edges of the paper, so it makes sense to allocate the caudal fin at the center of the paper instead. However, such a layout will mean that the model is opened towards the front. For models of lower complexity, this could be a less desirable situation, but for super-complex models, since glues are pretty much used all the time for shaping anyway, open-front designs are more acceptable and in fact even interesting.

ERM map and the abstraction.

What's even more interesting about this design is that the head and the body actually come from two completely different parts of the paper. After I'm satisfied with the abstraction, I found that most of the features can fit nicely in a 32-grid box pleating layout, but only when the head and the body are allocated separately. As a result, I have to fully utilize ERM to find a way to connect the body and the head. The final ERM map is shown in the figure above.

In this design, I used a variation of the GOPS on the pelvic fins to reduce the number of layers on them as much as possible. I also made several strategic meandering of rivers to spread the thickness across the model as evenly as I could. In the ERM map above, it may appear that there's still plenty of land, but in fact, the efficiency is pretty much optimal already due to the parity principle. And just like my Domestic Shorthair Cat, this model is also quite challenging to collapse, perhaps only very slightly easier.

Another thing that I'm quite fond of this design is that, despite being diagonally symmetric, it still uses an orthogonal grid.

The CP of this model is for sell at my Ko-fi store:

Buy the CP and instruction of Anglefish

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