looks like black worms or blood worms is that what you feed your fish?
algea
Oh. I had those in my turtle tank! It's a type of bug larvae. They start to multiply! I reccomend ENTIRELY removing everything in your tank and cleaning it very good! Get a calcium bone and they will all go to it. I hate them! But, they start to fly after like 1 month. They are very annoying little bugs!
I'M ANDREW AND I'M A FISHAHOLIC
-Andrew
and where would these larve come from ?? i think it might be left over bloodworms that didnt make it to the filter
Ya when I fed my turtles worms a couple times that happened. But, it happened a couple times when my air conditioner was in my window with a little 1/2" gap between the window and bugs flew in and laid eggs in my tank filters. We had some bug guy come over and I forgot what but it was a type of bug. They sealed up the Windows and fixed it all.
I'M ANDREW AND I'M A FISHAHOLIC
-Andrew