What is this small red critter?

[ZekeBoniface]

Can anyone ID this small critter for me?
This picture is under 100x magnification.
The critter was visible to the naked eye as a very very small, fast moving (considering it's size), red dot on a suction cup.
I saw around 8 on the suction cup. It was holding a temperature probe in the sump area of an AIO tank. I haven't noticed any on the glass.
Thanks!

 

[Dan_P]

Can anyone ID this small critter for me?
This picture is under 100x magnification.
The critter was visible to the naked eye as a very very small, fast moving (considering it's size), red dot on a suction cup.
I saw around 8 on the suction cup. It was holding a temperature probe in the sump area of an AIO tank. I haven't noticed any on the glass.
Thanks!

Great picture. Sorry no ID. I can’t tell if it is an adult or immature form. Looks like it has only one eyespot.

 

[vetteguy53081]

Can anyone ID this small critter for me?
This picture is under 100x magnification.
The critter was visible to the naked eye as a very very small, fast moving (considering it's size), red dot on a suction cup.
I saw around 8 on the suction cup. It was holding a temperature probe in the sump area of an AIO tank. I haven't noticed any on the glass.
Thanks!

Its an isopod and I would try to siphon with a small tube and capture as there are some that are good and some that are parasitic. For me, not worth the curiosity