I have a half moon betta in this aquarium:
I picked that aquarium because it comes with a filter and other reviewers said it was great for betta fish. My betta seems to be extremely happy. He swims and fluffs up whenever we come in the room. And he eats like a little piggy.
I got my betta fish from a private shop in town that is praised for its excellent quality. My betta fish did not have a single imperfection I could find. But now his fins are ripped slightly. You can't tell unless you put your nose up to the glass and really examine him, but those few tiny rips are there.
He used to have a sponge bob pineapple hut, but I removed it. There are no other decorations in the tank now.
I have monitored him for about a month, and whenever a rip repairs there is always another somewhere else. They are so tiny that my boyfriend says I am just paranoid. He says that the betta lived in a tiny cup for all of its life, and this is the first time it has ever gotten to swim around. He thinks that the tearing is natural, and we should just put a bit of aquarium salt in the tank to prevent fin rot.
Oh, one last thing. He is placed in the kitchen next to the fridge. Could the frequency be stressing him out?
I would really appreciate any help. It seems to be a tiny problem, but I'm worried about infection.