Rotifer infection in gut?

[confused_aquarist]

Has anyone encountered this before? https://drive.google.com/file/d/1fgL1ZSc8iP2I6VjY8qTEtI42GhGCDUqD/view?usp=drive_link
It seems to be a sessile rotifer.
This was a fresh fecal sample taken from a fry, which is asymptomatic.
Should this be treated, and if so would flubendazole work.

 

[Colin_T]

I wouldn't have thought rotifers would be an issue if something ate them, they are small crustaceans and not parasitic.

I wouldn't treat fry if they aren't showing symptoms.

Are you sure it's not protozoan or something else that might have crawled onto the poop after the fish did it?

 

[FranciscoB]

Rotifera are their own Phylum, quite unlike crustaceans and other Arthropoda. They are not parasitic.

 

[confused_aquarist]

I wouldn't have thought rotifers would be an issue if something ate them, they are small crustaceans and not parasitic.

I wouldn't treat fry if they aren't showing symptoms.

Are you sure it's not protozoan or something else that might have crawled onto the poop after the fish did it?

Yes, very sure they're rotifers having grown inside fish gut! Took out the feces before it even fell onto the floor.
I'm just going to assume they came from the flake food. It was marine algae flake and probably just happened to be loaded with cysts.

 

[confused_aquarist]

Rotifera are their own Phylum, quite unlike crustaceans and other Arthropoda. They are not parasitic.

I did a little research on this and indeed there doesn't seem to be such an internal fish disease. They are huge. It would have been so horrifying.