What is this?

[sharkweek178]

I found these when I was harvesting mosquito larvae yesterday.



Can anyone tell me what they are?

 

[sharkweek178]

I suspect that they'd be good food for the fish. But not knowing what they are, I'm not about to throw them in my fish tanks.

 

[MattW]

planaria? Some flatworm species, I reckon.

 

[Colin_T]

Planaria or Rhabdocoela. Don't put them in your tank, they are pests and eat fish eggs.

 

[sharkweek178]

Planaria or Rhabdocoela. Don't put them in your tank, they are pests and eat fish eggs.

I didn't. I sort out mosquito larvae pretty thoroughly so none went in.