I got back from thanksgiving with the family and found this in a 5.5 with just plants and a ton of Copepods, flat worms and little swimming detritus worms that I can't seem to get rid of. But that's besides the point.... WHAT IS THIS!? I had 6 guppy fry growing out in this tank for a while and then moved some plants in when I rescaped a month or so ago and have done nothing but turn lights on and occasionally fertilize since!!
I do have about 8 neons in my other tank so maybe the swords i transplanted had eggs??
But only one of these little guys showed up!!
I'm astounded because the nitrates are way hi too...
Sent from my iPhone using Aquarium Advice