▁Cob itis ▁heter oc l ita , ▁Fund ulus ▁fas ci atus , ▁Fund ulus ▁pis cul ent us , ▁and ▁Fund ulus ▁n ig ro fas ci atus . ▁The ▁m umm ich og ▁belongs ▁to ▁the ▁order ▁Cy pr in od ont iformes , ▁and ▁the ▁family ▁Fund ul idae . ▁There ▁are ▁two ▁sub species : ▁F . ▁h . ▁heter oc lit us ▁( Lin na eus , ▁ 1 7 6 6 ), ▁in ▁the ▁south ▁and ▁F . ▁h . ▁macro le pid ot us ▁( W al baum , ▁ 1 7 9 2 ) ▁in ▁the ▁north . ▁As ▁Fund ulus ▁mud fish ▁this ▁species ▁was ▁designated ▁the ▁type ▁species ▁of ▁the ▁genus ▁Fund ulus ▁when ▁he ▁created ▁the ▁genus . ▁ ▁The ▁name ▁m umm ich og ▁is ▁derived ▁from ▁a ▁Nar rag ans ett ▁term ▁which ▁means ▁" going ▁in ▁crow ds ", ▁which ▁reflect s ▁the ▁m umm ich og ' s ▁strong ▁sho aling ▁t endency . ▁Col lo qu ial ▁names ▁include ▁m ummy , ▁kill ie , ▁k elle y , ▁ch ub , ▁salt ▁water ▁min now , ▁mud ▁min now , ▁mud ▁d abb ler , ▁mar sh ▁min now , ▁bra ck ish ▁water ▁ch ub , ▁g ud geon , ▁and ▁common ▁kill if ish . ▁Some ▁of ▁these ▁terms ▁may ▁lead ▁to ▁confusion : ▁the ▁term ▁min now ▁should ▁be ▁reserved ▁for ▁species ▁of ▁the ▁family ▁Cy pr in idae , ▁the ▁mud min