Hello,
my name is Liliana, i have over ten years of experience as a designer, and what i like most is illustrate, that's why i like this project.
Please, visit my Freelancer portfolio https://www.freelancer.com/u/webpolis.html
to see some of the vector illustrations i made, in order to evaluate my work.
I can send you more samples, if you want to, or a test for this project.
I use Illustrator for this kind of projects, i can deliver you the images as vector format, and also saved as any other format you may need, like JPG, or transparent PNG.
I found this project really enjoyable and interesting, and i would like to retrace the fish images to vectors in detail, and improve the style and colors to add a 3D look like in the attached sample.
I hope we can work together, please, contact me if you have any questions, or if you want to see some more of my work or a test for this project.
Best regards.
Lili.