Goldfish

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2 goldfish in the tank

Goldfish – Size, Tank And Care Guide

A comprehensive guide to goldfish care, including details on their natural history, anatomy, biology, ideal aquarium set-ups and water conditions!

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Goldfish on rocks aquascape.

Do Goldfish Sleep? How To Tell And For How Long

Do goldfish sleep, and if so, how do they sleep when they can’t close their eyes? I answer these questions and more in this short guide to goldfish sleeping habits!