Characteristics of Healthy Fish

[Christian Tinoco]

I was wondering what exactly does a healthy, comfortable fish look like and do? Like what are some of the more common trait's based off of years of fishkeeping from members here: Color, size, maybe aggression, activity levels, natural behavior? I don't think or know of scientific proof that would prove whether a fish is happy but i'm sure theres a collective agreement out here as to what that may be.

 

[Lawlboom]

Alert, clear eyes, and interacting with the environment. A fish that is listlessly floating or having the environment act on it (Such as getting blown around by filters) would be sick or not feeling right.

 

[tlindsey]

I would say if the specie of fish is showing all the behaviors it is known for. Their is a lot of variables imo. Btw agree with above

 

[justarn]

Bright eyed, bushy tailed and a wet nose!-)
On a more serious note tho if it's a greedy feeder that's always a good sign and poo that just falls off and isn't stringy.