Aquarium guides for beginners
Fishkeeping, made simple.
Clear, honest guides to keeping your fish healthy and your water right — written for beginners, checked against the science, and never overwhelming.
Start here
Pick a topic — each hub begins with one complete guide.
Fresh from the tank
The latest guides, updated as the science and our testing improve.
Why Is My Betta Fish Not Eating? 7 Reasons and How to Fix It
Betta won't eat? Here are the most common reasons — from water temperature to illness — plus a step-by-step checklist to get…
Betta Fish Care for Beginners: The Complete Guide
New to bettas? This complete beginner's guide covers tank size, water, feeding, tank mates, and common problems — everything to keep your…
Why Finned Friends?
Every guide is researched against current aquarist and scientific sources, dated when it was last reviewed, and honest about what we don’t know. We’re enthusiast-researchers, not veterinarians — and when your fish needs a vet, we’ll say so plainly.