Catfish have spines behind their fins, which are sharp but not venomous in most species (one exception being Plotosus lineatus, a danger to humans). Catfish will sometimes attempt to drive these into predators.
It runs
It is, yes. If you had a tank with two different catfish species in, 'catfishes' would be a valid term to use, for example. "These catfishes live together in the tank."
They are harmless.
They protect themselves by squirting ink.
Citizens protect themselves with police departments. Nations protect themselves with a military.
how do lionfish protect themselves
scorpians protect themselves by stinging them with their tails
they use their sting tail to protect themselves
no, they protect themselves XD I have to laugh at that, but it is true they protect themselves.
Barnacles protect themselves by sticking to something sturdy.
dont think they can protect themselves
They protect themselves with their horns, made with really strong bones , and thick skin used as a shield to protect themselves.
Cornells Ouwehand has written: 'Namazu-e and their themes' -- subject(s): Catfishes, Catfishes in art, Folklore