Taco night
(alt: Video render of Isoxys minor, Middle cambrian bivalved arthropods shown here in orange with a dark aquarium background
Isoxys has a taco shaped carapace enveloping it’s entire body like a copepod, the open part of the ‘taco’ pointing down, its segmented body is completely hidden inside the 'taco’ with tiny swimming legs reminiscent of those found in Triops, barely visible poking out of it. and two front appendages that look somewhat like an anomalocaris’ claws but pointing up although they are not closely related to anomalocaris. It also has two eyes visible on the front, poking out of the carapace
Tl;Dr a swimming taco with segmented 'tusks’ on the front and shrimp like legs poking out the bottom.
The video depicts them flitting around the aquarium from a close-up view with a short focus distance since they are typically only 1 cm long)