Lol pretty well all catfish that have barbed spines are somewhat venomous, just some more so then others. They secrete a mild neurotoxin that just causes nerves to flair in pain. Ever get stabbed by a catfish? Remember how long that painful throbbing lasted? That was the venom's doing. Lol ik cory cats tend to hurt like a mother f@#$_&. With rapheal cats I'd worry more about the double edged, razor blade fins rather then the venom they contain lol. But yes I can attest to rapheal's having a pretty painful venom as well, experienced it once when one of mine refused to let go of my thumb and then started flailing wildly. I was moving him to a warmer tank from the garage tank, heater failed during the beginning of winter, and he didn't like that too much lol.