I got all 4 scalesss
Collectables may seem effortless or pointless but I believe it gives any game a lot more "depth"
Procedural animation also looked satisfying
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Yeah the scales will just give a different look to the fish if you go near the purple octopus in the bright zones. Scales 3 and 4's looks are actually buggy, since they shrink the mouth's range, so I hope you didn't encounter that. I added the scales originally as a type of key, but I didn't like it.
Thanks for playing!