People vary on whether a hash style presentation would be visually clearer. For me it's far clearer to have just the data, lined up in columns. Having keys repeated on each line is, for me, visual clutter which I have to screen out, and it doesn't add information in a case like this where the type of each field is pretty much clear from the content.

Conceptually, it's a good rule to have like things in arrays, and unlike things in hashes, and I think that rule gets fairly wide agreement. Perceptual styles are different. What may be helpful markers for tanktaus are visual noise that needs to be screened out for slower readers like me. One man's sushi is another man's bait.