Hitchhiker ID

[nanoman95]

Hey all

Sorry I’ve been a right pain with questions this week but final couple from me! Can anyone identify these?

1) grey patch which is slightly raised, seems to have spread slightly the past 2 weeks

Struggling to get a pic as it keeps disappearing but also have a very small feather duster worm! How do I keep him alive? Does he need anything special?

 

[ISpeakForTheSeas]

Struggling to get a pic as it keeps disappearing

Does it retract when it disappears? If so, it may well be a Spoon Worm (taxonomic Subclass Echiura).

 

[ISpeakForTheSeas]

have a very small feather duster worm! How do I keep him alive? Does he need anything special?

Most hitchhiking feather dusters in our tanks don’t seem to need anything to do well, but the ornamental ones may need some phytoplankton - I recommend the following species or a blend containing them:
-Isochrysis galbana (T-iso)
-Chaetoceros sp. (C. muelleri is a good choice).

 

[WheatToast]

Does it retract when it disappears? If so, it may well be a Spoon Worm (taxonomic Subclass Echiura).

It might also be a sponge shaped suspiciously like a spoon worm. Sponges tend to be harmless filter-feeders.

 

[ISpeakForTheSeas]

It might also be a sponge shaped suspiciously like a spoon worm. Sponges tend to be harmless filter-feeders.

Ah, yeah, rereading OP’s post, I may have misunderstood what was moving. Yeah, a sponge is a good call if it’s just growing and not moving.

 

[nanoman95]

Thankyou for your input! I shall monitor the grey thing but hoping it is just a sponge! So relieved about the feather duster, he is awesome! Deffo want to keep him for as long as possible