Artemia-crustaceans, and their total number of 7-9 species, as well as other inhabitants of our planet who managed to get to us from very ancient times, are simply unique creations. Unique in them all. From habitat to breeding mode.
The first mention of them can be found in the report of the Iranian geographer, Alireza Asem, referring to the first half of 10 century of our era.
Artemia can live and survive in water, almost any salinity. From 25 to 250 g / l, which often makes it inaccessible to most predators. And often being the only inhabitants of reservoirs with such habitat. Even more unique is the process of reproduction of these crustaceans. Not only are they capable of breeding parthenogenesis, that is, without the help of a male and fertilization, so their eggs are even more amazing than the Artemia themselves. And if under favorable conditions, the eggs hatch immediately, then with increasing salinity, which means a period of drought, the crustaceans begin to lay eggs with chorionic (protective) coating. And if the reservoir is dry, then in a dry state eggs can survive for two years. They are not afraid of either the lack of oxygen or freezing temperatures. A small percentage can withstand even the boiling point of water for two hours.
The eggs also have special flagella, with which they catch on the feathers of birds and can be transported over long distances.
But as soon as conditions are normalized, nauplii start to hatch from eggs or as they are called cysts.
Artemia - nauplia.
Barrel shape with two legs and an eye in the middle reacting to light. Naupliu well can be viewed on my video with macro at the end of the article. And it is the nauplia that is the ideal food for the fry of almost all types of aquarium fish. And what's more, without it, sometimes it is simply impossible to raise fry, even such seemingly not complicated fish like an angelfish or apistogram.
The first and most important is the brine shrimp eggs themselves. They can be bought as expensive, from eminent manufacturers, JBL for example, and 5 times cheaper on Aliexpress. And if in the store you pay 7-10 euro for 20 gram, then from China you will get 100 gram for 12-13 euro.
I tried both, and did not notice the difference in the percentage of hatching. The main thing to monitor shelf life. The fresher the better. And buy in proven places. I'm buying here here (go).
The next thing you need is an incubator and a compressor. (What are the types of incubators and how to make myself, I wrote the article separately. link!)
We also need sea salt and water. Some also add a pinch of soda for carbonate hardness and light for the incubator. He experimented with the one and the other and did not notice the difference.
Then we mix everything and wait. The hatching time depends on the temperature (optimally 28 degrees) and the quality of the eggs. It usually takes 24-36 hours. And if you then shine a flashlight on the incubator, you can see points moving in spurts. These are crustaceans (nauplii).
How to feed?
For some fry, for example, apistogramm, it is recommended to clean them from salt. To do this, nauplii is released for half an hour into clean water, then filtered again. Then nauplii released into the aquarium with fry. And you can watch as the hunt begins! Artemia is good because it doesn’t spoil the water and can stay alive until 8 hours. That is, the fry will be fed for a long time.
For eating dead crustaceans, I recommend to have a snail.
The whole process can be seen on my video for you:
Ammonia in aquarium! Danger!
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