Are walking catfish predator proof?

[Snoke FIsh]

Here's my logic, they have venomous spines, i've been slashed by them and they hurt. So like say I keep some with my barramundi in a 2000 gal even if the barramundi tries to swallow them as long as they're a decent size the barra should get slashed and spit it out. Is my logic flawed? They've been growing out together in a 75 gal if that helps at all.

 

[jjohnwm]

Well, they're certainly tough to swallow...but they can also be equally tough to spit back out. It's not uncommon for Clarias and many other cats to get lodged in the mouth or throat of a predator, resulting in the death of both fish. There's always that risk. Their pectoral and dorsal spines lock into the raised position and that's it; no going further down and no coming back out.