Overcrowding

[john fox]

I was just reading the saltwater discussion with Rossi and was wondering if I'm overcrowded as I bought some more fish at the auction I'm running a 55 and here's the line up /2 purple mbuna 8 red mbuna most fish are about 2/3 inches oh and a striped Rafael 5 yellow tails 1 adult yellow labs 4/ juvies SOUNDS LIKE overcrowded 1 large pleco and 2 convicts 🐠🐠that's about 24 fish can I maintain this tank of fish by doing water changes and how often