I’m guessing that this is an amphipod, but not sure?

derek12261984 · May 23, 2024

Hi all, fairly new to the reef hobby, having my tank set up for about three or four months now. I recently sat down and looked at all my rocks really closely today and I’m noticing a bunch of these little guys crawling across my rock Work. I don’t think it’s any type of bristle worm as these guys are incredibly small (less than or equal to a mm maybe). They also look almost translucent.

I have regularly dosed my tank with copepods but never amphipods or isopods. Does anybody have any idea of what this might be? Also, FYI, ignore the dino… I am currently in a battle with it. They almost look like they’re eating the dino in fact. Anyone know what these things are and whether or not they are good or bad for the tank.

derek12261984 · May 23, 2024

derek12261984 said:
Hi all, fairly new to the reef hobby, having my tank set up for about three or four months now. I recently sat down and looked at all my rocks really closely today and I’m noticing a bunch of these little guys crawling across my rock Work. I don’t think it’s any type of bristle worm as these guys are incredibly small (less than or equal to a mm maybe). They also look almost translucent.

I have regularly dosed my tank with copepods but never amphipods or isopods. Does anybody have any idea of what this might be? Also, FYI, ignore the dino… I am currently in a battle with it. They almost look like they’re eating the dino in fact. Anyone know what these things are and whether or not they are good or bad for the tank.

twentyleagues · May 23, 2024

Yes amphipods. Usually good, have heard people have seen issues but for as long as I have had tanks I have had them and never an issue

derek12261984 · May 23, 2024

twentyleagues said:
Yes amphipods. Usually good, have heard people have seen issues but for as long as I have had tanks I have had them and never an issue

Awesome thank you so much! There are a bunch of them inside of my rock and around my frag plugs. They don’t seem to be bothering the coral and it almost looks like they’re eating the dino. I’m dealing with.