For now, I'm too tired to see straight.
Here's a harvestman who scrambled across my feet while I was taking photos of a squirmy, tentacled something or other:
|Unusually, around here, he has all eight of his legs.|
And then I zoomed back to the critter leaving a slime trail around the walls of my tank.
Update: he's a male Phalangium opilio. Thanks to Christopher.