My goldfish tail is ‘crimped’ and I have no idea why.

Help, what are they doing?

Why does my fish do this

Why is my baby black moor struggling to swim?

Why is my goldfish always going this?

Why is my goldfish doing this?

What is she doing?

Why is my goldfish doing this?

Does anyone know why this goldfish gill could be flipped up?

Why does he sit like this all day long?

Why is she suddenly doing this for first time

Goldfish doing zoomies then sinking