Hi, I'm new at this and I have been having ammonia issues but my issue today is that I just did a water change on my 10 gallon tank and as I was siphoning out the water a creature caught my eye. A tiny little thing and what puzzles me is that I only have 3 fish in the tank. A male (or possibly not) Platy, Black skirt tetra and a Red Minor Tetra. The platy is the most vetern of my tank of about 2 months. My question is what is the little tadpole looking thing and where could it have come from? It currenty got siphoned out and is the the bucket of dirty water but if it could be a baby fish what do I do with it? I don't have a separate tank for it.