I like running from Crash Fish. Can you grab 'em like food fish? I suppose not and it'd be like a fireworks accident anyway.

But as soon as I hear them I hit the 1 key and zip away, hearing them blow themselves up in my Glidewash never gets old

In my first run in Subnautica I blindly blundered in to a cave intersection, triggering three at the same time. I died in a hail of exploding crash fish.