Corydoras Aeneus Bronze Cory Cat

Cories are easy to breed providing you have the right tank setup. I
recommend a 40 L with a sponge filter. Put in 6 Cories. This way you have a 99% chance of getting males and females. Feed them well on sinking wafers, frozen bloodworms, shrimp pellets and they also love the Freeze Dried tablets Nutra Fin makes. Keep your pH at about 6.8, slightly soft, and a temp of about 25°C and you should have spawnings. Provide lots of hiding places. Most Cories in LPS are quite young so it could take some time.

Cories love a slightly acidic pH, so rainwater will pull the pH down to where they like it. They also seem to like a BIG waterchange. About 50% at a time, this makes them think the rains have come. Pour it in slowly or use a watering can. Drop the temp about 2°C, the big mama cory will get "in the mood" then *LOL*. Usually after you get your Cories going, expect spawnings 1 or 2 times per week of about 100-300 eggs. I have found C. aeneus to be the easiest cory to spawn, very prolific. Most of my C. aeneus spawn 2-3 times per week of about 250 eggs at a time.

How to deal with the fry: I remove the eggs, the adult Cories will try to eat their fry. And no use moving your prized breeders around all the time. Wait until the eggs are about 24-30 hours old before moveing them. They should be a golden brown color. Cut a straw in half and put your finger over one end and scrape the eggs off wherever they were deposited with the other end. Place them into a shallow white bowl under a lamp, add a drop of fungus guard to the water. The eggs should hatch in about 12 hours after this. When they do setup a small tank (10 or 20 liter) with water from the "breeder" tank, add an airstone and do DAILY water changes of 10%. Keep them at a temp of 26°C. Feed powdered fry foods and BBS 5-6 times per day. When they seem crowded in there move them onto a 40 L, you can start adding some shrimp pellets to the diet now and add a sponge filter now too. Keep feeding them powdered fry foods and BBS too, keep doing the daily water changes. When they outgrow this tank you can move them to a 75 L, the long tanks work best for Cories, still use the sponge filter. You can probably now start cutting out the BBS and powdered foods. Start feeding them just as you are the adults. The daily water changes are needed. Oh I forgot something! Keep them on bare bottom tanks until they reach a size of about 2 cm, this way they won´t get trapped under a gravel and die. Sand is a good idea for all Cories as it won´t damage their "whiskers". Well I hope you enjoy your cats!