During a water change two hatchets jumped behind the tank where I couldn't reach to rescue them.
They all eventually jump out. Always.
I've given up on hatchets. Even with a full canopy with just a small area cutout for the HOB filter, they still managed to suicide themselves. I even found a crispy dead guy wedged in between the canopy and the trim of the tank, an area mere millimeters wide. That was a one in a million jump to accomplish that.