What gang is rival to Islander 23 and was formed in 2012?
Apex
Title: Hudson Dusters
Passage: The Hudson Dusters was a New York City street gang during the early twentieth century.  Formed in the late 1890s by "Circular Jack", "Kid Yorke", and "Goo Goo Knox", the gang began operating from an apartment house on Hudson Street.  Knox, a former member of the Gopher Gang, had fled after a failed attempt to gain leadership of the gang from then leader, Marty Brennan.  However the two gangs later became allies during the gang wars against "Gay Nineties" gangs, the Potashes and Boodle Gangs, soon controlling most of Manhattan's West Side as far as 13th Street and eastern Broadway, bordering Paul Kelly's Five Points Gang to the north.  While the gang dominated the West Side, it constantly battled smaller rival gangs including the Fashion Plates, the Pearl Buttons, and the Marginals for control of the Hudson River docks throughout the 1900s.  Eventually, it drove the rival gangs out through sheer force of numbers, with over 200 members, not including the Gophers, who numbered several hundred more, controlling the waterfront by 1910.
Title: Apex (gang)
Passage: Apex is a street gang in Melbourne, Australia.  It was formed in 2012.  The founding members were part of Victoria's South Sudanese community, although the gang later became more diverse, particularly after it merged with the YCW gang.  Associated with violent car-jackings and burglaries, Apex came to prominence in the national media after a brawl in Melbourne's Central Business District between it and the rival Islander 23 gang in March 2016 after the Moomba parade.  This prompted a crackdown by Victoria Police.  They apparently have little structure and no official colours.
Title: Islander 23
Passage: Islander 23 also known as I-23 is a Pacific Islander street gang in West Melbourne, Victoria, Australia.  Islander 23 came to prominence in the national media after a large scale brawl in Melbourne's Central Business District between it and the rival gang Apex in March 2016 after the Moomba parade.  It consists largely of youths from a South Pacific background.
Apex (gang) Islander 23