(DEAD FISH) Kuhli loach parasites not responding to Paracleanse

One of my 5 neon tetras started acting up this morning in my

What's wrong with my kuhli loach?

What’s wrong with my fish? One died yesterday and this one

Kuhli loach seizures? Wtf.

Urgent help. What’s wrong?!

Any clue what’s wrong with my zebra loach?

Kuhli loach on its last leg? Need advice!

What is wrong with this glowlight tetra? I feel so bad for it

What’s wrong with my fish

Kuhli loach is swimming strangely

Is there any saving my YoYo loach?