|
Guppies, I believe, do show old age. Some fish, on the other hand, don't.
There are some animals (unsure if there are fish like this) that actually don't die of old age. Some turtles are, I believe, one of these critters. Of course, every day they live, there's the chance that they are eaten, or that an organ fails, or that they eat something poisonous, etc...
I wonder if koi are one of these types of animals. Their bodies might be damaged by toxins in the water, but I'm not sure that they're damaged by age itself.
|