Coldwater biotopes house fish that does not necessarily require heating apparatus such as goldfish and koi. Although these fish would be more active at 78°F (25°C) temperature, but this increases their metabolism and shortens their lifespan. For a tropical fish tank, maintaining a warm environmental temperature ranging between 75 to 80°F (24 to 27 °C) enables the fish specimens to thrive. We further complement the clients’ tanks and ponds with aquatic plants. More details in the aquatic plant section.