Almost 4 yr old Guppies - declining health

[SingingFish]

I have 3 rainbow guppies that will be 4 years old in August. They have lived healthy lives and are in a very established tank (parameters are fine) with 3 candy cane tetras and 3 snails. They are now losing their color and their tails are shorter. I can’t see any fungus (fin rot) and wonder if they are being nipped at. They do seem to be slowing down. Could these visual signs just be signs of old age? I started treating the tank with Melafix and Pimafix today just to be safe. The tetras are perfectly healthy - no signs of fin issues. I welcome your thoughts. Thank you!

 

[Kwikfab]

Never had guppies before (would like to in the future) but a quick online search says guppies live between 2-3 years in captivity.

If that was my tank, I'd assume the fish are at the end of their days and have lived a long, healthy life based on your parenting.

That is unless you own a specific species (not stated) that live a lot longer?

 

[SingingFish]

Thank you. I appreciate your thoughts. I worry about fish health so much that simple old age is a new idea for me. lol

 

[Fishfur]

Thank you. I appreciate your thoughts. I worry about fish health so much, that simple old age is a new idea for me. lol

If it’s any consolation, for them to have reached this age means you must have given them very good care. It is hard to say goodbye but you did really well for them.

 

[Hellfishguy]

A 4 year old guppy is the equivalent of a 105 year old human.