I would certainly agree about endlers being jumpers. They have been known to clear approx 2 feet before.
I would add though that in my experience, fry do sometimes get eaten/killed and attacked by adults and juveniles. I have lost fry this way and have seen them being killed.
For the record I keep and breed a number of different endler strains such as snakeskin, orange chested, snake chested, neon, black bar as well as some half black yellow delta guppies.....
