they can be almost microscopic to as large as 10-12 feet.
Yes. But large catfish eat small bluegill.
1 pound
a catfish will eat any fish that is 3/4 its size.
Probably the wels catfish a large spieces of predatory catfish the world record is 256 pounds though reports of ones 750 pounds it is the largest species in Europe
A Large Catfish that lives the Amazon
Put it in a very large freezer bag.
There are a large variety of 'sucker mouth' catfish. Most come from Central and South America but there are some species in Southeast Asia.
Catfish are found in rivers and streams on all continents, except one: likely Antarctica. Catfish are very hardy and resilient. They are bottom feeders so there is plenty of food for them. They can grow quite large and quite fat.
The only catfish I would try to keep with large cichlids is something that grows large and can defend itself like a Plecostomus. Don't expect any catfish to eat rubbish or poo. They won't.
There are many species of large catfish there, some over 70 pounds. The largest is probably a blue catfish, or perhaps a flathead.
You can find it easily by checking the fins of and tails of catfish. Female catfish have large tale and fins so you can check it by comparing two. The second thing is that you should check is to find out fins of catfish in female catfish there is a mark on her fin which distinguish her as female.
For catfish some bodies of water are much more prone to have trophy fish than others. Small ponds for instance may have large amounts of Catfish but will rarely have any true trophies. Bodies of water that hold Flathead Catfish and Blue Catfish are much better places to fish for a true trophy than a lake that only has Channel Catfish for instance