Method for preparing tropical fish feed by using brine shrimp, and tropical fish feed prepared thereby

A method of preparing a brine shrimp-based tropical fish feed, the method comprising:

• S100:
• preparing culture saline water;
• S200:
• adding a brine shrimp egg to the culture saline water of step S100 to prepare to hatch the brine shrimp egg;
• S300:
• circulating air in the culture saline water of step S200 to generate a fine air bubble in the culture saline water, thereby hatching the brine shrimp egg;
• S400:
• adding a first spirulina to the culture saline water of step S300 after hatching of the brine shrimp egg;
• S500:
• separating and removing eggshell of the hatched brine shrimp egg from the culture saline water of step S400;
• S600:
• adding culture saline water having the same concentration as the culture saline water of step S100 to the culture saline water of S500;
• S700:
• adding a second spirulina to the cultured saline water formed in step S600 to supply nutrients to a hatched brine shrimp larva;
• S800:
• adding Haematococcus powder to the culture saline water of step S700;
• S900:
• separating and removing additional eggshell from the culture saline water of step S800, and collecting the brine shrimp larva;
• S1000:
• freezing the collected brine shrimp larva, followed by re-separating and removing eggshell remaining in the frozen brine shrimp larva;
• and
• S1100, freezing and packaging the brine shrimp larva of step S1000 to obtain the brine shrimp-based tropical fish feed,
• wherein in step S400, after 18 hours have elapsed since the brine shrimp egg starts to hatch, the first spirulina is added to the culture saline water at a weight ratio of 1.5-2.5 g spirulina/330-350 g brine shrimp egg;
• wherein in step S700, the second spirulina is added at an interval of 90-120 minutes until 48 hours have elapsed after 18 hours have elapsed after the brine shrimp egg hatches and the first spirulina is added so that a total of 90-100 g spirulina is added per 330-350 g of brine shrimp egg;
• wherein step S800 comprises mixing a Haematococcus powder with water at a weight ratio of 2 g Haematococcus powder per 800 ml of water to form a mixture;
• placing the mixture in a grinder;
• pulverizing the mixture for 1 to 2 minutes, and adding the pulverized mixture to the culture saline water of step S700 for 5 times at 2 g each from 40 hours to 50 hours after hatching of the brine shrimp egg;
• and
• wherein in step S1000, the collected brine shrimp larva is frozen for 2.5-3.5 hours and then introduced into fresh culture saline water to completely remove eggshell remaining from the hatched brine shrimp egg based on sinking of the frozen brine shrimp larva and floating of the eggshell.