Quick question on angelfish, looking for a lil help. So I've seen a lot of videos and pictures of angelfish and all of these pics seem to have angels with their fins fully extended, and open. But in my tank my angels don't seem to do that, they have no signs of nipping on them, they are eating well coloring up, swimming all around the 75 gallon, but they don't seem to be flexing their fins - they are young angelfish by the way. So is this because they are young? Or because they are petco fish or is it my tank? Also one of the angels seems to have a little issue kind of like Tourettes. It will be swimming fine, eating fine and they just spazz out for a little and then go back to normal, and it'll do this a few times throughout the day, she didn't do this when I first got her (him. idk). My tank has a few manzanita branches with lots of little protrusions and little branches. Did it somehow get hurt and now has brain damage? Also looking a little lethargic rn but still eating we. also, last question i promise, I had fed my fish ginger, spinach, cooked rice - only as a treat once a week - and dried saltwater fish, all in tiny proportions, is that okay? Thank tank also has, 1 severum, 2 angels, 2 bolivian rams, and 2 pearl gouramis (for a little while) and is at 78-79 degrees. - Thanks