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Betta Fish Food: Daphnia

Submitted by on 14 June 2011 – 12:41

At this post i want to repeat I was about to repeat material about BETTA FISH FOOD, DAPHNIA. Also known as "water fleas", Indonesian called him as ‘KUTU AIR’, there are principally two different types of daphnia used most often by betta keepers: Daphnia pulex and Daphnia magna.

The type we use most often is the Pulex, which is a very simple live food to culture. Most daphnia are female, and will produce young regularly if adequate food and conditions are provided. They are unusually sensitive to chlorine and heavy metals, so you should always use a dechlorinator in water used for your culture.


Daphnia can be cultured outdoors during the warmer months in large plastic tubs. Prepare your daphnia tub or tank several days prior to ordering your starter culture. You should "seed" the container first with water from a healthy, well established aquarium that has not been treated with chemical medications. Fill the container about half full and add your daphnia culture.

You will fill the tub the rest of the way up over the next several days as the colony grows. Add the daphnia slowly, acclimating them to the new water much the same as you would acclimate a new fish. These are living organisms and will be shocked, perhaps lethally, by extreme differences in the temperature. The culture can be fed on Green water and harvested by removing half of the water through a net. Do this every day and then top off the container with Green water. On a hot day this could result in the water becoming depleted of oxygen and cause your daphnia to perish, so care must be taken not to feed the daphnia too much.

Daphnia is an excellent food source as BETTA FISH FOOD (for fry and juvenile bettas), and will live in the tank water until they are found and eaten. You should know that the daphnia contain some nutritional components: Protein 5%(Protein as a percentage of dry matter 45.45%), Moisture 89%, Fat 5%, Fiber .9%

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