Good evening everyone, I have a question about my 55 gal tank!!! It has been up and running for 4 mos. tomorrow, while looking at it today I noticed what appeared to be 4 small starfish ranging in size, they are very small the boggest about the size of the bouncing blob(emotioncom). I am wondering why do they appear to have 6 legs and not 5? I looked at Doctor Foster and Smith web site and the look to be sand sifters!!! Can anyone give me some advice please!! What would be some more great additions I can add? 55 gal 80 #'s LR 40 #'s LS 1 yellow tang 1 bicolor Angel 3 blue damsels 12 snails 3 powerheads