What is swimming in my tank?

These little white water snake looking things have been popping up in my tank. What are they? They are very small and my guppy fry have been attacking them.

 

I have them in some of my tanks as well.

I don't know what they are but I've had them for months so I'm assuming they're harmless.

 

Nematodes. Harmless little guys.



Also, hold your camera sideways when taking videos

 

Deritus worms?

 

I also have nematodes in my tank and they are two different things. The nematodes usually just slither along the glass and are flat.

These things swim around all the time and are round.

 

How about fry food

 

Nematodes. Harmless little guys.



Also, hold your camera sideways when taking videos

Nematodes it is. Thanks. The fry tried eating them but gave up. Too much for them to handle at 3 days old. lol

 

Nematodes it is. Thanks. The fry tried eating them but gave up. Too much for them to handle at 3 days old. lol

Lol They are probably the size of the fry!