unheated aquarium

What Fish Do Well In Cold Water?

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Outside of the goldfish and the guppy, the zebra danio (Brachydanio rerio) is the most readily available of all the cold-water fish . Native to South Asia, they tolerate temps that fall into the mid-60’s and are very easy to care for. Long-finned species are available, as well as a popular leopard-spotted variety. What fish … Read more

What Is Temperate Fish?

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Temperate fish types Temperate fish have evolved to live in water at a temperature of 18–23°C , they are not coldwater fish , nor are they strictly tropical. These fish are quite happy in a filtered, unheated aquarium located in a centrally heated room but they are unsuitable for a pond or an aquarium in … Read more