I just looked at my tank and found hundreds of these little swimming bugs in there. Best way I can describe them is they look like micro tadpoles. They are orangish brown with little tails and they swim like crazy and are attracted to light. I have seen copepods and scud shrimp, but these are new to me. If it is a newbie find for me great someone please let me know. But if it looks bad please help. I tried to get a pic with no luck. Don't think they are babies of anything that is in the tank because all fishes are singles and have been there for sometime. They are also a little bigger than the copepods that I have seen in my tank and the pods in my tank have all been white in color.