Common American caviar comes from salmon roe (reddish eggs), trout roe (smaller reddish eggs), American sturgeon (black eggs) and whitefish roe (yellowish eggs).
I have never eaten catfish roe. My common sense suggests that if it were edible, the catfish marketing machine would be palate deep in it. The catfish industry has looked at every way possible to market every part of the creature. At one point, in the early 80's, someone even tried to figure out how to tan the skin for belts. Decided it could be done, but no one would buy it.
If roe were edible, and marketable, I suspect someone would be doing it.
I took a few minutes to research the topic and found absolutely nothing about it.
There's nothing...nothing to suggest it's poisonous...or delectable. I have no idea.


Teach a man to grow fish...
He can teach to catch fish...