![]() They were put into an isolation tank that has been set up for months and is tested. No one knew more about discus than he did.Īnother thing, if you did luck out with two or three "compatible" discus, adding a fourth and fifth later is really asking for trouble. I lost all 4 Cardinal Tetras and one German Flag Platy within 24 hours. On the size, Jack Wattley used to advise purchasing discus together at the 3 inch or maybe it was 4 inch size, to have better luck establishing the group hierarchy. Discus are generally not as rough as angelfish, but they are still cichlids and territory and dominance can be very strong. Eventually a male/female pair may form, and then you are in another situation. A group of five or more should spread out any dominance, though again there are always the exception. There are always exceptions, but it is better to assume the fish we acquire will be normal and not abnormal. They develop an hierarchy within a group placed in the aquarium, and having two, three or usually four rarely works because of their temperament. They are shoaling fish that live in groups. Discus are very similar to angelfish in this respect. They swim around in groups, creating a stunning swathe of color in your aquarium. If it goes beyond 30 degrees, then there are chances that fish will die due to heatstroke or damage to their gills. In case the temperature is below 20, you need to add some heating equipment to your aquarium. Like other types of tetra, Embers are shoaling fish. Water temperature: Cardinal tetras prefer a temperature range from 24-28 degrees Celsius. They also like relatively neutral waters with a hardness rating between 5 and 17 dGH. ![]() This is not advisable, unless you can acquire a bonded mated pair. Embers do best in warm temperatures between 73 and 84 degrees.
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