Natrium, and medhorrinum has that fishy smell .
I would think one of the two, Natrium ould fit, and its a follower of carc, and som mat med i dont recognize at all, has a nearby Natrium picture of carc, so check the mat meds, Allens is the best to use, newer ons are unreliable, exept for vermeulen, that id a fairly good mat med, i use as a desktop, Allens as a confirmatory(its so big).