So my tank cracked and lost all my fish (managed to save 1 very large pleco). Tank had only cichlids-oscars, green terrors and convicts. Got a much bigger tank now 470 litres(125 gallons)...wanna restock with oscars and green terrors but also want some other non cichlid fish as well. I was thinking silver dollars, redtail or bala sharks and clown loaches but i never kept these fish before and I'm not sure if it will be a good fit. And advice if this will work and on other tank mates that might work well?