YouTube - Weird thing in my tank
no idea what it is it swims really fast and its not a fish kinda worm like took it out of my tank just in case it would harm my fish. any idea what it is?
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YouTube - Weird thing in my tank
no idea what it is it swims really fast and its not a fish kinda worm like took it out of my tank just in case it would harm my fish. any idea what it is?
Planaria?.....
It does appear to be a SW flatworm of some type. I don't believe it is parasitic though.
Best Regards,
Stuart
27 Gallon High-tech Light-limited Planted Tank
Lots of assorted plants and fish
15 Gallon High-tech Light-limited Planted Tank
L10a's, and Spotted Blue Eyes
22 Gallon Long Iwagumi Style Tank Without CO2
Commemorative, Nano, Planted Bowfront
ADDICTED TO PRESSURIZED CO2
STOP THE BELO MONTE DAM
That's definitely a fish. Probably a small goby. That's panicked swimming which makes sense if he has spent the last little while hiding out in a little live rock crevice.
How old is your tank and where did you get your live rock from?
All manner of things to come hiding in live rock, but hidden fish are relatively rare.