Possibly a little researh on your own, you would find that a managuense is from central america and not Africa, also that a jag grows way to big for a 55g.
male jaguars- 15-16" max size in aquaria, not a chance in anything that size.
female jaguars max size in aquaria- 13-14" also not a chance in that size tank
mins for those 2
males- at least 5'x18" if not 6'x18"
females 4'x18"