What is this feces?

My fish are fighting some sort of internal parasites or worms. I am currently treating with alternating doses of prazipro and Levamisole for 4 weeks. I saw this feces in one of the tanks today. Or possible it isn’t poop at all? Can someone explain what this is.. or at least guess.. thanks for any advice

Looks like an insect that’s fallen into the tank to me. What makes you think your fish have an internal parasite ? Look very healthy to me no weight loss.

Anthony1976 said:

Looks like an insect that’s fallen into the tank to me. What makes you think your fish have an internal parasite ? Look very healthy to me no weight loss.

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Oh they have worms or parasites no doubt. This is what their poop looks like.