Ah, can see them better now and they look bigger in the second group of pictures. It does not look normal. But it seems odd it is similarly shaped on both sides of the fish.
I'm not sure. If it seems to be growing fast, I would be concerned it was a tumor. If it is, I am so sorry.
It could be a malformed body. Is it something that is steadily growing along with the fish?
Does the fish seem to be bothered by the shape, having odd bulges in other parts of the body?
What size tank are the fish in? What are the tank mates?
Do you know the water parameters?
Keeping the water near perfect as possible will help allow the fish to be a healthy as possible with the body not having to combat unsafe water quality, and the fish will have a greater chance of a longer life.
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 New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
 Start here - Aquarium Advice Article
https://www.aquariumadvice.com/guide...ater-aquarium/
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves
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