banana plant premature decline

[Daintree]

So, I have always had great luck with my double mahoi bananas. But the latest pup, now an adult, has declined drastically, and appears to be dying.  Looks just like the normal "end of lifespan" decline, except it has not produced fruit.  It has two healthy pups. It has gotten exactly the same regimen as the others that thrived - plenty of sun, water and fertilizer, but no wet feet.
Do certain specimens sometimes just finish their life without fruiting? It is about 18 months old.

Thanks!

Carolyn