No but this happened:
The Guppy and Neon Tetras have decided to band together in a little group(more like neon tetras since they follow the guppy). I always noted this and it has never changed. Sometimes one
neon tetra prefers hanging out with the guppy instead of the other neon tetra. That's one interesting group. They are behind some plants plotting their revenge for putting so little of them but they have to wait for my 20 gal to be mature.
I wish my fish were immortal I wouldn't stand one's death.

Sorry for your loss.