OK I messed up on the guppies, but the rest I was right about, and I am not being sarcastic. Sorry but I would NOT show that chart to any beginner. Like I said before, it is a good idea, but many things are wrong. I am not just speaking from personal experience, I am going on what I have researched and what has been said by people on this forum. If a beginner saw this chart it would give them the wrong idea about some things because they would not be educated enough to know about some things.
1. The chart is too general. It leads people to assume angelfish are great with all tetras, which we all know is not entirely true.
2. Also there are some obvious mistakes. Like saying plants are not good for South American Cichlids. Entirely untrue. The Amazon River is full of plants and fish.
The chart is crap IMO. Please don't take this personally, I am not directing any of this to you, but rather the person who created the chart.