Ok..so my Betta, Mini is fine..at least I think so. Today I was cleaning out the filter and I found what looks like a small worm trapped inside the fibers of the filter cartridge. I was wondering if ANYONE could provide ANY help or insight into what this could possibly be. Here's a pic...hope it helps.
How big is it and was it alive or dead? Do you feed any live foods?
Most critters we find in our aquariums are harmless-we have a lot of critters in our tanks that naturally occur and never see-that can be a sign of healthy water or a dirty and/or overfed tank.
Sometimes bugs will get into your house and lay eggs in the water, or they hitch-hike in on live plants. I wouldn't be too worried, just rinse the filter media out gently and vacuum your tank really well.