Catfish do not have venomous barbs.
African cichlids, barbs, livebearers, synodontis catfish, loaches, cichlids, tetras, mailed catfish, labyrinthfish, and rainbowfish.
neon tetras barbs cory catfish
knife fish, tetras, knight crabs, barbs, red tail catfish ext
Yes, a catfish can fin you. The two pectoral fins and dorsal fin have long, hooked spines that dig into skin, excreting venom that may produce extreme pain, necrosis and vasoconstriction (Tightening of the blood vessels). The vasoconstriction is present to slow down the speed at which the venom moves, thus enabling it to be more concentrated and potent. Also, catfish fins house bacteria, and a high risk of infection is present. However, despite all these risks, catfish finning is not usually fatal. Although there are a few cases of large catfish stabbing into a heart with their spines. Some smaller species of catfish's venom are fatal, such as the Striped Eel Catfish. Smaller and/or marine catfish tend to have more virulent stings, where as larger freshwater catfish tend to cause extreme pain and swelling.
All catfish have a mild venom in their pectoral and dorsal fin spines. As for eating, thet are good if they don't come from polluted waters.
Some are. But many will only cause injury with their hollow barbed fins, which can deliver a stinging protein. But some species, such as the striped eel catfish, can deliver a toxic mucus that may be fatal to humans. The edible portions of catfish do not contain any toxins. A recent study suggests that about half of the 3000 known species of catfish are poisonous. Only a few species are poisonous enough to hurt humans (none in North America). The rest cause about the same amount of discomfort as bee stings. National Geographic also states that as the catfish grow, the venom glands shrink, indicating the venom glands are meant for defense while the fish is young. The venom comes from glands near the pectoral fins. When the fins are grabbed the glands are ripped, releasing the venom. The majority of catfish species have poisonous barbs located within their dorsal (top) and lateral (side) fins. If stuck with one of these, they can inject a toxin which causes a painful sting which usually resolves on its own after time. However, like any wound, it can get infected and it is advisable to clean and treat it. Only a select few of catfish species (located in areas of Southern Asia and India) have stings which could cause serious complications, or very rarely, death. The catfish toxin is protein-based (like bee stings) and thus is treatable with meat tenderizer. Ammonia and vinegar will not be very effective, as they are alkali (base) treatments, to be used for acid-based toxins.
Stonefish
Humans but in the ocean, catfish with the barbs removed can be used as live bait in the open seas. There is no 'common' enemy of catfish. They are just as vulnerable as minnows when they are small.
The first defense of a Blue Spotted Stingray is it's color. It's bright color is a warning to predators that it's poisonous. This breed of stingray, as most, also has a long tail with barbs on it. The tail contains a venom. The Sting ray will stab with it's tail, using the barbs to cut whatever is threatening it and releasing the venom into the predator.
Barbels
Jellyfish venom is delivered by barbs called nematocysts, which are located on the creature's tentacles and penetrate the skin of people who brush up against them.
Most Barbs - no. Tiger Barbs, Green Tiger Barbs and Ruby Barbs - a DEFINATE no! they will nip it to pieces! Other Barbs I'm not so sure about - do some research, but most Barbs - no!