Just an added note that I can see my baby Tarahumaras in their Sterilite tubs - the plastic is just cloudy enough that it partly blocks their view and I think helps them feel safer. If I really need to do a quick wellness check and take a closer look at them, I just pop the lid off of the tub and take a closer peek. For a daily/every-other-day wellness check, you'd end up disturbing them just as often in a fish tank because they'll be tucked into hides or under/behind clutter. It's not like the fish tank makes them all that much more visible.
I'm biased, though. I haven't used a fish tank for snakes for literally a couple of decades, and back then we didn't know any better. Sterilite tubs have been an absolute godsend in terms of providing an inexpensive, secure, and healthy environment for young snakes, and I've been so grateful to have them available. They're easy to clean, there's plenty of room for cork bark, cork rounds, hides, and artificial vines for clutter, and the little ones can feel safe and secure.