new tank with TBS rock placed in it last night. there is a fat short worm looking organisim, sitting on a rock. one end comes to a piont, other end has a round opening, both ends have been sticking up in the water (generally looks like a leach). its just been sitting there all day but now it is dicharging miniture rice looking things. the "rice" is coming from white blisters at the head(?) that were not noticable this morning. it has dropped at least a dozen rice pods so far. spawning or exploding? and what is it.