ID Help Needed. Copepods?

Reefer Stride 42

New Member
View Badges
Joined
Nov 11, 2025
Messages
19
Reaction score
37
Location
Denver
What state or country do you live in
Colorado
Rating - 0%
0   0   0
Hi, I need some help IDing these little white critters. I have been stocking copepods off and on for a couple months so I initially thought they had grown and settled in the tank however these things don’t seem to move like copepods based off of the videos I’ve seen. They are stationary, hang onto the rock work, and I never really see any of them moving. Apologies in advance for the picture quality and the green hair algea. I’ve been in a three month battle with that.

20260729_141701_0DEA708F-D47A-4D18-A678-B11D39144B9D.png


20260729_141701_45D0BAFD-C586-483E-AA6D-7431D71E015D.png


20260729_141701_E7B7B020-ACA9-4087-9FEC-99843445E858.png


20260729_141702_B7B51ADE-94B8-493F-AF44-D5DD883E54A1.png


20260729_141702_F4C7A8C4-1FC9-4A3C-92F1-F2849358D585.png


20260729_141702_52BFF8BD-1553-4517-BB40-7394783D3EDB.png
 
They look like sponges to me, especially the ones with the rounder base. Growing in the shade is common for sponges. Assuming my ID is correct (it might be worth pulling one out to feel and examine it) then they're good guys. No need to intervene. They filter-feed.
 
They look like sponges to me, especially the ones with the rounder base. Growing in the shade is common for sponges. Assuming my ID is correct (it might be worth pulling one out to feel and examine it) then they're good guys. No need to intervene. They filter-feed.
Oh awesome, thank you for your help!
 
Sycon sp. (Pineapple Sponge)

Take a look at post #83 (and #82). Page 5, Post 3 (and 2) in the thread posted below. If you are using the app you might need to navigate there manually. Otherwise the link should take you right there:

https://www.reef2reef.com/threads/microscopy-thread.1138845/post-14427946

Sponges are really fascinating and you got lucky growing a bunch of good guys 🙂
Some sponges can overgrow corals but pineapple sponges stay small and don't harm anything.
 
Sycon sp. (Pineapple Sponge)

Take a look at post #83 (and #82). Page 5, Post 3 (and 2) in the thread posted below. If you are using the app you might need to navigate there manually. Otherwise the link should take you right there:

https://www.reef2reef.com/threads/microscopy-thread.1138845/post-14427946

Sponges are really fascinating and you got lucky growing a bunch of good guys 🙂
Some sponges can overgrow corals but pineapple sponges stay small and don't harm anything.
Thanks for your help! Taking a look at this now
 
Sycon sp. (Pineapple Sponge)

Take a look at post #83 (and #82). Page 5, Post 3 (and 2) in the thread posted below. If you are using the app you might need to navigate there manually. Otherwise the link should take you right there:

https://www.reef2reef.com/threads/microscopy-thread.1138845/post-14427946

Sponges are really fascinating and you got lucky growing a bunch of good guys 🙂
Some sponges can overgrow corals but pineapple sponges stay small and don't harm anything.
Great post btw thanks again
 

TOP 10 Trending Threads

WHEN PLANNING CORAL PLACEMENT, WHAT USUALLY WINS? THE FUTURE COLONY, OR THE NEXT FRAG?

  • I leave plenty of open space for large future colonies

    Votes: 3 21.4%
  • I plan for growth...but occasionally squeeze coral into tight spaces

    Votes: 5 35.7%
  • I try to balance future growth with variety now

    Votes: 4 28.6%
  • I fit in as many frags as I reasonably can

    Votes: 3 21.4%
  • One more frag always wins! Future me can solve the problem...

    Votes: 0 0.0%
  • It depends on the coral and how quickly it grows

    Votes: 1 7.1%
  • I squeeze 'em in! Survival of the fittest, baby!!

    Votes: 0 0.0%
  • I’m already out of room, so apparently we know my answer...

    Votes: 1 7.1%
Back
Top
Home
Post thread…
Market
What's new