Ok so i bought a couple angels a couple months ago and all was well.Now one of the black angels has separated himself from the group and hides in the corner and acts very listless.He hasn't eaten food in awhile.He justs mouths it and spits it all back out.I have also noticed his poop to be white as well.Could he have internal parasites?I noticed when i went back to the shop where i bought them they were under quarintine and only had about 10 left out of the 100 or so.Any help would be appreciated.Thanks