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Whether to give the parent continuous cory with daphnia can cause breeding cory corrupted. because if you run out given the daphnia, the parent must immediately lay eggs .. My farm has c. metae, c. similis, c. sterbay.
one more thing why c.similis where I lay around 250-300 eggs but the eggs looked good only about 80,20,70, at most 120. In the aquarium there are 9 female and 12 male. whether there is something wrong with my care. My plants love to eat tubifex worms every morning and evening .. sometimes daphnia or it's already natural factors .. thank's ..

Daniel,

It is always best to give a varied diet for all fish. Feeding corys a diet consisting only of daphnia will not be productive. I would start with a good pellet food and supplement with worms and the daphnia. With regard to the fertilization rate of cory eggs, that varies from species to species. How large is your aquarium?

Mark

thank's mark. My Aquarium 90 * 50 * 35 volume of 120 liters of water.