help id critters

[skynet883]

40 gallon breeder, 6 months old tank, i have 100's of ant likes critters all over my tank, i did added copepods on moth 2. but i am not sure if that's what it is

 

[Lionfish Lair]

Did it scurry around? Maybe look up gammarid amphipod and see if the images are similar.

 

[Reef Nutrition]

Look at isopod images as well. They do have an ant-like look to them.

I got this image here: http://www.melevsreef.com/node/417

Chad

 

[skynet883]

Are any of these critters bad to the aquarium and/or do i need to do anything to them