I know this is going to sound crazy but I'm babysitting a betta fish and shes about 2 years old. She's had a rough 6 months. She's been doing fine all week but then she has a strange stringy white rope hanging from her. Maybe its poop but it looks like her intestines?! It was hanging for a day and a half and this morning it came off when she hit a plant. Is this a parasite? Or is this just poop? She's also been eating her pellets then spitting them back out. Help!