I have a baby hi-fin platy (Pip) about 7 or 8 months old. Last week, I rescued him from the plants, where he was stuck with his head down. Or at least I think he was just stuck. He seemed fine for the last few days, but today, he/she is swimming with his head facing straight up. He doesn't eat. I was thinking maybe he got hurt when he was stuck in the plants (plastic), but is there something else going on that I can fix?