Slim chance it'll get anywhere near half that size in captivityIt's gonna take years or a decade for a bullhead to get that big, also they are extremely lazy and will focus on eating fish food.
-was that a joke?
they LOVE bullfrogs and catfish are rarely worried about whether something fits in their mouth or not - they can always drown it and work on it underwater until it's manageable.
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they don't get as big as the yellows but they never stop growing
-not my image
I'll have to disagree with this generalization. I've had mine for nearly 3 years and it is not aggressive with tankmates nor piggish during feeding time. A friend of mine had a brown one and it had the same temperament as mine.But they will take on just about anything that gets near them and they're pigs.
That's fine and I agree they would eat the tadpoles and eggs without question, but bullheads are NOT the hyper aggressive stereotype that some cats get. They are catfish nonetheless so yes frog breeding would cease in that pond. EDIT I have two yellow bulls, 1 I caught full grown, the other I raised from a fry and neither of them eat any tank mates or even harass anything smaller than them.The point being they won't become full sized frogs in a smaller pond with catfish. Obviously the catfish will have an easier meal with the eggs and tadpoles. But they will take on just about anything that gets near them and they're pigs. I get paid to take out bullheads sometimes. They're kind of a pest for some. We sein and dredge as best as we can but it's never 100% When you drain a pond they can burrow in the mud and wait it out for quite a while then when the water and new stock is added later they eat the eggs and the babies. Some of the ponds in our area are too close to creeks as well so when they flood over sometimes bullheads will visit their stocked all you can eat buffet- and I get a call.
Its for this reason that each frog lays hundreds of eggs at a time........hoping that a tiny fraction will survive to adulthoodNot to mention Koi will eat tadpoles, too.