I love spangles! They're known to be extremely hardy they can tolerate water temperatures from 5° to 44°C, salinities ranging from pure fresh water to seawater and pH from 4.0 to 8.6! And only growing to 25cm and 500g they're an easy and beautiful fish to keep. But it's best to have a few because thhey are a schooling fish. I'm not too sure you would find them in england easily though.