Help! Tiny bugs on glass and rocks

SeattleReefer

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I couldn’t get any pictures of the ones on the rocks but they are all over the glass, just noticed them today and am pretty worried about what they are. If anyone could tell me what they are and if they are bad or not that would be awesome

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Thanks everyone
 

not_eman209

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Free food/clean up crew. They mostly come out at night. My wife freaked out when she saw the the first time 😅
 

IKD

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I couldn’t get any pictures of the ones on the rocks but they are all over the glass, just noticed them today and am pretty worried about what they are. If anyone could tell me what they are and if they are bad or not that would be awesome

20260117_205145_71E55716-D824-4CB9-8F15-04FEF77BB11E.png

20260117_205146_3CA800ED-F918-4208-A62C-8822BA010764.png

20260117_205147_348BBB14-6434-4C7C-A085-CD900FF5ABFC.png

20260117_205148_2648D922-82E8-4A20-8A57-3848EF3D97AF.png

20260117_205148_BD8811EC-0090-4518-8D86-CA35CA8FE600.png
Thanks everyone
Copepods and great creatures to see in your tank. They’ll lessen in population over time as the tank settles and you add fish which eat them
 

Reginald Reefer III

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Feed live phytoplankton once in awhile and ~monthly or so add a bottle of live copepods to sustain the population. Fish like mandarins and dragonets will eat thousands per day to stay healthy. It's a great sign to see them and means you are doing something right!
 

Euphyllia97

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I don’t see copepods (maybe a couple) or amphipods in the picture. Imo these are isopods they are a lot bigger than most copepods. There a few parasitic types, but the ones you have are normal and very healthy for your tank. Their number will go down as your detritus and “leftovers” are being consumed. They self-regulate population and your fish can use them as a snack! They are often seen in population explosions when the tank is being overfed or new.
 
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SeattleReefer

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I don’t see copepods (maybe a couple) or amphipods in the picture. Imo these are isopods they are a lot bigger than most copepods. There a few parasitic types, but the ones you have are normal and very healthy for your tank. Their number will go down as your detritus and “leftovers” are being consumed. They self-regulate population and your fish can use them as a snack! They are often seen in population explosions when the tank is being overfed or new.
Thank you!
 
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SeattleReefer

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Feed live phytoplankton once in awhile and ~monthly or so add a bottle of live copepods to sustain the population. Fish like mandarins and dragonets will eat thousands per day to stay healthy. It's a great sign to see them and means you are doing something right!
Thank you!
 

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