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It isn't so much a matter of size.; these fish take at least two years to mature and can't be sexed easily; one method to get a breeding pair is to raise about half a dozen in a large tank (200 gallons or more) to let them pair off naturally.

The best way to acquire a pair is to purchase a proven pair of adult breeders.

Be sure you have a breeding tank setup too, there requirements for a breeding tank and the layout which is not the same as the regular aquaria; the tank should be at least 100 gallons. No gravel, rocks plants etc. It will take about a month for the pair to get used to their breeding tank.

One or two power filters, one on each side of the tank to try and keep the water clean; clean water is very important when breeding fish and raising fry. This is almost an impossible task with Oscars because of the massive amounts of food that they eat (live goldfish, frozen krill, almost everything but the kitchen sink!) and their appalling table manners. You'll be changing 10 - 20% of the water every day so this will help. When the eggs have been laid, you will turn off the power filters and set up an air stone or to at the opposite side off the tank of where the eggs are. You'll need a heater of 500 watts or two at 250 watts. Not the submersible types, the kind lets you adjust the temperature from outside the tank.

All little more then what was asked, but I could go on about what to look for when breeding time begins. Any more questions, just ask :)

Take care,

CF

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16y ago

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