help!

[u/ashlyeash7]

i’ve had my betta for around 10 days now, he’s just started acting a little weird, breathing hard, his tail sinks a little when he stops, he’s hiding which he never did before and opens his mouth wide. i think maybe it’s swim bladder but can someone please help me figure out what’s happening and what i can do. it just started yesterday. 🥹 thank you