PlanetCatfish.com

Im trying to find out why my sun catfish ahs grow about 6 inches in about a year it has eaten 4 guppies 5 tiger barbs but most of the time it eats blood worms and alge wafers

I'm not clear what you're asking: The fish will grow to about 450mm - 18 inches standard length. 6 inches in a year is not unreasonable for a young fish.

See:

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Mats

no that what i wanted to know if it was normal for it to grow that fast because i bought to of them at the same time and the on is only about 2 1/2 inches

I expect that they grow fairly quickly, yes.

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Mats