Ornamental fish include tropical fish and common goldfish, which is better? What is the most suitable temperature for common goldfish? thank you

I suggest you keep goldfish. The main goldfish are cold-water fish, and heating is very troublesome. Most of the products are three products, which is very unreliable. To be honest, I don't think it's worth the risk to raise a fish. In addition, heating consumes a lot of electricity every day. To be honest, I think it usually costs too much. Unlike Hong Kong people who raise tropical fish without heating, it doesn't matter. It doesn't cost much to buy a better goldfish. What you sent is the grass gold in goldfish, which is the least valuable and of course the best to raise. It can be regarded as crucian carp with a slightly longer colored tail fin, and its ornamental value is low. There are many kinds of goldfish, and keeping them well is also a pleasure. I have kept goldfish for many years. I suggest you keep them.

Let me show you my fish.