Lol, no surprizes here! Cons will breed in a toilet if that's all they have (and enjoy it in the process).
Here's what you need to do............... (I'm willing to bet 90% of the eggs are fertilized).
1) Choose one of two ways--- let the fish raise the babies, the most interesting, or raise them yourself, the safest. If you let the parents raise them, they will likely eat the entire first batch. Dont' fret, within a month or so you'll have more eggs. Remove any other fish in the tank, the cons will terrorize the poor things. I don't care if you have a tiger shark and 50 pirhanas, the cons will win
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2) Either start NOW a brine shrimp hatch or buy frozen BABY brine shrimp. Sometimes people have raised convict fry on flake food ground with a mortar and pestle, but you get a big mortality rate with that method (not to mention a polluted tank). Feed lightly, and pipe the baby brines directly to the little fish STARTING on day two (they have a yolk sac at hatching, they won't eat till it's used up). Don't feed much at all until you see the little guys dashing at the brines and eating them.
3) Be prepared for the unsettling problem of not having anywhere to put the babies--- pet shops are often overloaded with them. You may have to give them away. I usually did until I stopped breeding them.