Ok.. one of my sunset gouramis has been pooping kind of strange lately. It poops out this long thin strand that looks like a worm, and then the thick normal looking poo at the end of that. It doesn't look alive and I'm not even sure its a worm. I do feed my fish mostly frozen blood worms some frozen brine and flake. This only just started tho and I've been feeding them blood worms for like three months now. (My first thought was it was pooping the blood worms out, but its too long to be the bloodworms) The fish looks ok from what I can tell. Any ideas? TIA