I have this worm in my FW invert tank. There are no fish here - just snails and shrimp. I have searched and searched but can't find out:
What species of worms are these?
How do I get rid of them without hurting my inverts?
As far as species goes, I am pretty sure they are some sort of 'flatworm', but I can't get anything more specific than that. Also, all the info I find about flatworms is in relation to fish, not inverts. I know there are worm treatments out there, but I can't find any that are safe for other inverts.
They are on average 0.5cm in length and 1mm wide. Most are a darker silver/grey (gunmetal?) on top and a pale flesh color on the underside. Some larger specimens are a rusty red on top, but these are rare. They are flat and ribbon-like with a well define spade-shaped head.
They will swarm if freeze dried bloodworms are floating in the tank and show mild interest in sinking pellets. They will also swarm newly hatched apple snails and eat the flesh of living, but injured applesnails. They seem to leave healthy applesnails and my other critters alone.
Any advice is appreciated!
Applesnail (Pomacea diffusa)
Thiara cf. winter
Tylomelania zemis Poso Orange
and a long, thin brown snail who's name I can't find anymore
Blue Pearl (Neocaridina cf. zhangjiajiensis)
Cherry (Neocaridina heteropoda var. red)
Yellow (Neocaridina heteropoda var. yellow)
Caridina babaulti "green"
Caridina babaulti "black"
Caridina babaulti "stripe"
Caridina cf. propinqua orange
Amano (Caridina japonica)
Malawa Shrimp (Caridina pareparensis parvidentata)
P.S. Sorry the picture is blurry; these are very hard to photograph. I placed a sheet of black plastic into the tank to give the camera a fighting chance at focusing. Also used flash and macro-mode. Willing to try other setups to get better pics though. :)