Telling a male goldfish from a female isn’t always obvious, and unlike some fish, goldfish…

Watching a bright orange or red goldfish gradually turn pale or white can feel alarming,…

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…