I have a 180 gallon tank and I don’t like to keep the same fish forever, can’t afford multiple tanks, what are some suggestions for fish I can grow out and trade in when I’m ready for a change?maybe slow growers? A group of individual species fish(one of each) to avoid con specific and breeding aggression? Might I do bichir, green terror, clown loach, flower horn, exotic plecos, silver dollars, discus(or any combination of these or other)