i think I have the second type, they are lightly tan, not red, and don't seem to have the third point in the middle of the tail area. i think my tubo snail is eating them? maybe my 6 line? don't know. Ive been wanting a mandarin for a long time, I just ordered one, a spotted mandarin.they are supposed to eat flatworms.but i will try to siphon them out, I can only see the few on the glass, cant really see any by looking on the sandbed, it is very multicolored. they are shaped like ghost!! i thought i just had build up on my glass, glad i took a better look with a magnifier!!you can barely see the eyes!!thanks all for advise