Hi everyone, I ordered 3 Hillstream loaches online and one of them arrived with what looks like a bloody stomach, but I think the bleeding is likely internal. Pic attached - does anyone have any experience with this?? I'm really worried about him and doing all the googling I can, but this is my first time having Hillstream loaches so I'm hoping someone with firsthand experience might be able to help me out. All three fish seem to be acting normally, but they're still in the bag they shipped in so it's a little hard to tell. Thank you in advance!!!