I just started a new aquarium a couple days ago (I’m only experienced in small single fish tanks and outdoor ponds I have). It’s 10 gallons, heated, the whole nine yards. I have 1 Blue Gourami, 3 Angels, and a Pleco (sucker).They’re all young and get along just fine and yes I know they will get bigger and I’ll put them in one of my artificial ponds when that time comes (I live in south Florida so the water is already warm enough for them). They guy at the pet store said I still have room in the tank and can add more fish like neon tetras, small coy fish, and a few other types. My worry is that the big fish will bully the small fish. I didn’t have this problem with my artificial ponds because the small fish I added were wild minnows from my real pond and they are very hardy fish and had no problem showing the bigger fish whose boss and as far as I know there wasn’t any spread of disease. So now I want to do is take some more minnows out of the wild pond and put them in my aquarium to see what the other fish do. Is that a good idea? How do I know the minnows are healthy and won’t disease my other fish? And does anyone else have the type of fish I have together with small fish?