st - century ▁opera ▁sing ers ▁Category : 2 1 st - century ▁women ▁opera ▁sing ers ▁Category : 2 0 th - century ▁Argent ine ▁sing ers ▁Category : 2 1 st - century ▁Argent ine ▁sing ers <0x0A> </s> ▁Route ▁ 1 9 ▁may ▁refer ▁to : ▁ ▁One ▁of ▁several ▁high ways ▁- ▁see ▁List ▁of ▁high ways ▁number ed ▁ 1 9 ▁ ▁One ▁of ▁several ▁public ▁transport ▁routes ▁- ▁see ▁List ▁of ▁public ▁transport ▁routes ▁number ed ▁ 1 9 <0x0A> </s> ▁The ▁look down ▁( S el ene ▁vom er ) ▁is ▁a ▁game ▁fish ▁of ▁the ▁family ▁Car ang idae . ▁It ▁was ▁first ▁described ▁in ▁ 1 7 5 8 ▁by ▁Carl ▁Lin na eus , ▁in ▁the ▁ 1 0 th ▁edition ▁of ▁System a ▁Natur ae . ▁ ▁Description ▁Although ▁the ▁look down ▁is ▁similar ▁to ▁the ▁Atlantic ▁moon fish , ▁it ▁can ▁be ▁distinguished ▁by ▁its ▁d ors al ▁and ▁anal ▁fins , ▁the ▁second ▁ray ▁on ▁each ▁fin ▁being ▁many ▁times ▁longer ▁than ▁the ▁surrounding ▁ray s . ▁This ▁gives ▁the ▁d ors al ▁and ▁anal ▁fins ▁a ▁notice ably ▁sc y the - like ▁shape . ▁Also , ▁the ▁d ors al ▁fin ▁of ▁the ▁look down ▁has ▁ 9 ▁sp ines ▁and ▁ 2 3 ▁ray s , ▁while ▁the ▁anal ▁fin ▁has ▁only ▁ 3 ▁sp ines ▁and ▁ 1 8 ▁ray s . ▁Like ▁the ▁Atlantic ▁moon fish , ▁it ▁has ▁a ▁deep , ▁rh omb us