Hello everyone so I recently got these two clown fish in my new (fully cycled) saltwater tank and one of them seems to be eating less and I've noticed it also has been having white stringy poop just sticking out of his butt. Is this an intestinal parasite? I also noticed it has a smaller or pinched stomach compared to the other one. How should I treat him, I've been reading that prazipro might work or I can do the seachem metroplex and focus combo with their food. My tank has no corrals in it and I've had these clowns for about 13 days now. Started noticing the white stringy poop about 4 days ago. I was feeding them some frozen brine and mysis shrimp in the beginning but I stopped because they weren't eating them anymore and to see if the white poop stoped and it hasn't cause I've read that also may cause white stringy poop. The other clown fish seems to be fine and eats a-lot when fed small pellets. The "sick" one eats one or two small ones tops. What should I do? I have a video of the two fish but haven't gotten the white stringy poop on video yet. Im trying to focus on the sick one in the videos the stomach looks sort concave a bit compare to other one.