What is the stuff in blood that starts with an m?
Mitochondria- energy production
menstruration cycle starts form when you see white things in your pant or brown stuff some say it is infection but my mum says that if you keep seeing the white stuff i am not really sure of what it i called that it means you are all most there in your mensturation then you start seeing spots of blood that is acually what i know.
Do you mean "leech", the parasitic, black, segmented worm? If so, the relationship the leech and fish would have would be like parasitism. Since the leech sucks blood from the fish and stuff. Obviously you need blood to be in you to live and stuff. Leeches feed off of the blood's nutrients [I think] If you meant some other animal, I"m sorry. Dx