You walk over to your aquarium expecting to see your bright orange or white goldfish,…

A goldfish that’s normally active suddenly parked on the substrate, barely moving, is telling you…

A goldfish parked at the surface, especially one visibly gulping or “kissing” the water line,…

A goldfish that suddenly starts darting around, spinning in circles, or repeatedly bashing into the…

A goldfish floating belly-up at the surface looks alarming and is often mistaken for dead…

Fancy goldfish are among the world’s most recognizable ornamental fish, admired for their flowing double…

A goldfish that suddenly stops eating is one of the clearest signals something’s changed, since…

There are hundreds of named fancy guppy strains, but only a handful earn the label…