I found a little white worm in my aquarium this afternoon, watched it for a while, and I'm pretty positive it's planaria. Now, I've only seen one of these things in there at a time (there might be only one altogether). Should I worry about this? How best should I deal with this before it becomes a problem?
Thing is, I don't know how it got in there. I haven't added anything new, except for betta food and algae wafers; and I do 15-20% water changes about twice a week. Water parameters are perfect.
Anything else I should know about planaria?
Oh, and if it helps. My tank:
Temp. 79 degrees
0 ammonia, 0 nitrites, <5 nitrates
Occupants: Male betta, otocinclus catfish