What are these Little 2mm to 3mm creatures in my tank

[spyglass]

Hi reefers,

Need some expertise, just noticed that my tank has a lot of 2mm to 3mm little creatures crawling on glass and rocks. Pic not too clear.

Description: 2mm to 3mm, multi legged, greyish-white colour, has 2 antennas in front and 2 little "antenna like" at the other end, looks something like those (2 or 3cm)creatures that crawl around the rocks in East coast beach except those are out of the water. Marine cockroaches ?

Are they harmful to the tank ? Bust them with sixline or other wrasses ?

Please share , thanks.

[CFOh]

Hi reefers,

Need some expertise, just noticed that my tank has a lot of 2mm to 3mm little creatures crawling on glass and rocks. Pic not too clear.

Description: 2mm to 3mm, multi legged, greyish-white colour, has 2 antennas in front and 2 little "antenna like" at the other end, looks something like those (2 or 3cm)creatures that crawl around the rocks in East coast beach except those are out of the water. Marine cockroaches ?

Are they harmful to the tank ? Bust them with sixline or other wrasses ?

Please share , thanks.

Those @ East Coast shld be Isopods

And if looks like below shld be amphipod.

cheers...

[spyglass]

Thanks !!!! Yes more like the bottom one. Just checked the net for amphipods and seems they are not harmful to the tank and is also food for some fishes. Thanks again !

[inwear]

Thanks !!!! Yes more like the bottom one. Just checked the net for amphipods and seems they are not harmful to the tank and is also food for some fishes. Thanks again !

it is food for your madarin fish

[clannad]

are they indicator of water quality?

[samuel88]

are they indicator of water quality?

They're quite hardy i think, so the only way they would be used as a indicator was if they all started dying, then you would know there's something REALLY wrong with your water.

[Morpheous]

As long it is not extreme small worm like structure (Fluke), they are fine...

I've plenty

[dryDiver]

bro , go goggle 'harpacticoid copepod' pic.

This is yum yum food for mandarins- good stuff

cheers

[Nic1988]

Definitely food for your fishes hehehe

[John Deroe Kenedy]

doest it have 2 black visible spots, oval shaped?? If it does = Isopods.... 2mm is quite big

Isopods will stick onto ur fishes n suck blood...

[John Deroe Kenedy]

Isopods

Amphipods