Bug identification help found on acro

[moosevandyke]

Hey guys! Wondering if anyone knows what kinda bug this is? Found on acro. Dipped in KCL and now treat in milb as I do with all new incoming corals no matter the vendor:)

 

[AKReefing]

Tardigrade (aka water bear)? Depends on size.

 

[Sophie"s mom]

You will definitely need @ISpeakForTheSeas for that crazy looking thing

 

[moosevandyke]

Hey guys! Wondering if anyone knows what kinda bug this is? Found on acro. Dipped in KCL and now treat in milb as I do with all new incoming corals no matter the vendor:)

Small spec hardly visible to naked eye look like dust:) not sure what power this was on

 

[ISpeakForTheSeas]

You will definitely need @ISpeakForTheSeas for that crazy looking thing

That's a polychaete (a bristleworm) of some variety; you can see the chaetae relatively well, and you can see the parapodium clearly enough to recognize the hooded hooks on bottom.

If I could tell what kind of chaetae it has (the shape of the chaetae), I could identify the family the worm is from for sure, but given the presence of the hooks and what seems to be a rounded, tentacle-free head, my first thought would be Lumbrinerid Worm:

To quote about their diet:
"most lumbrinerids are carnivores on both sessile and motile prey, with a few herbivorous and subsurface deposit-feeding exceptions"*

The carnivorous ones tend to eat things like bivalves, snails, other worms, brittle starfish, and occasionally Heart Urchins (Spatangoida). The herbivorous ones feed on diatoms, sea grass, etc.

*Source:
Diet of Worms Emended: An Update of Polychaete Feeding Guilds - Appendix A - Family-by-Family Review
(The paper)
https://www.annualreviews.org/content/journals/10.1146/annurev-marine-010814-020007 (The link you can download the Appendix from)
https://www.annualreviews.org/conte...nurev-marine-010814-020007#supplementary_data

 

[moosevandyke]

Cool thank you!!!