Here's an attempt of me recording my Xbox capture from my TV (since I don't currently know how to directly send a Xbox capture onto here). It should be in a high enough quality to get an idea of what happens with this glitch.
@Steven Shinkevich
I do have captures of this glitch, and it's easily and consistently repeatable. The only issue is that I'm not really sure how to send it onto this website in particular.
Lloyd Spee Agreed, for some reason some of my pre-existing tropical fish's colors are back to normal on my survival world, but others are still messed up, all blue dory fish are still triggerfish, and all naturally spawning fish, and all creative mode spawned, and all command spawned tropical fish are having a white pattern rather than their normal colors.
Also most of the predefined specie names are still messed up/don't show when caught with a bucket.
So current problem to fix would be fixing their pattern color, fixing their predefined specie names in the bucket, and to separate blue dory fish from triggerfish as well as correcting their colors too.
@Kayla Pickens it's all good, I had a world with every predefined fish specie in a bucket and released them, all of them had black patterns, but their base/body color remained normal(except the triggerfish and blue dory fish mentioned earlier, that color also got altered, as the triggerfish has an incorrect base/body color too, and blue dory fish got turned into triggerfish for some reason), and most fish don't keep their original predefined specie names, though some do.
Water doesn't flow into them, you have to place a water bucket on the block, or place the blocks in already existing water if you want a water-logged block. This is an intended feature to my knowledge.
I can also confirm that I've been experiencing this glitch with the Yellowtail Parrotfish as well with this video that I made last night of the glitch in action; https://youtu.be/IvC_7UYuLEM
In the video I'd type in the proper summon command that you would expect to get a Yellowtail Parrotfish summon from, but I only get a generic white kob as a result.
Outside of the video, I've also tested this summon command with every other tropical fish, and came to the conclusion that the Yellowtail Parrotfish is the only tropical fish with this issue.