yes they do it's very important that they have there water cleaned out once and a while.
you can use bluegill or you can go to a store and buy catfish bait
Yes, they do.
Filters are beneficial for any aquatic life.
yes
Many people have a Bristlenose Catfish as a pet. One would not usually eat a Bristlenose Catfish. However, to cook this catfish successfully, one would need to cook it on a stove at about 250 degrees Fahrenheit for 25 minutes.
Before that question can be answered one would need to know what kind of catfish you are asking about. There are so many different species that are called "catfish" that it is impossible to make a generalisation.
Range hoods may need replacement filters, but only every three or five years.
Several species of Catfish are actually equipped with rudimentary lungs. These lungs allow these specific catfish to "gulp" air from the surface of the water and survive even if the water is not aerated.
no they don't
Well in some states you need a license but mostly you would need a license
fresh water. i beleive. i think.
Most filters are carbon filters, so they won't filter out much flouride. For that, you'll need a more robust filter.