Small Critters on my Green Leptoseris Coral

[MDProuty]

Hello everyone. I added a Green Leptoseris coral to my tank a couple weeks ago and I noticed it has been losing it's color. I put it in a low flow, low light area upon recommendation of the fish store I bought it from. Today they told me to try putting it in an area with a bit more light to see if it makes the coral happier.

Upon further inspection, I see several small critters on the coral and I'm not sure what they could be or if they are "good" or "bad" critters. Can anyone help to identify these?

Thanks in advance...

Malcolm

 

[KJ]

Hard to tell from the pic. Google isopod munnid or amphipod gammarid.