Crawling all over my rock and sand when lights out

[Reef of Fillory]

These are crawling all over my sand and rocks when the lights are out. Is anyone able to id?

 

[Crabs McJones]

Amphipods, good thing, your fish will love them

 

[Reef of Fillory]

Amphipods, good thing, your fish will love them

That's what I was thinking and hoping, but I wanted to reassure myself that they weren't something evil. Thanks crabs!

 

[NB Reefer]

My guess is amphipods since they are that large and visible.

 

[NB Reefer]

Feels good to post the same answer as @crabs_mcjones

 

[graffitireef]

Amphipods. These are gold. You want as many of these bugs as possible.

 

[KMench]

If you have too many I'll take some!