Getting started
Start an aquarium that stays healthy
A buying and setup sequence that prevents the most common new-tank mistakes.
Read guide →FISH · AQUARIUM · POND · OCEAN
Know the fish.
Build the right home.
Research-led guidance for choosing, keeping and observing fish responsibly. Start with a practical topic below.
Browse guides ↓
PRACTICAL TOOL
Is your aquarium ready for fish?
Check the essential setup steps and calculate the water needed for a partial change.
THE GUIDE LIBRARY
Find a useful answer
14 guides
Aquarium design
Grow aquarium plants and plan an aquascape
A low-maintenance plant plan with lighting, planting and algae control.
Read guide →Freshwater care
Betta care: a reliable single-fish setup
Tank, heat, food and behaviour checks for Betta splendens.
Read guide →Freshwater care
Choose and keep small schooling fish
Compare tetras, minnows and rainbowfish before mixing temperatures and water needs.
Read guide →Freshwater care
Guppy care without accidental overstocking
A care plan that includes the fry guppies are likely to produce.
Read guide →Ponds & cold water
Goldfish, telescope goldfish and the bowl myth
Why adult size, eyesight and waste load matter more than a decorative bowl.
Read guide →Ponds & cold water
Plan a koi pond for adult fish
Pond volume, filtration and containment decisions before buying koi.
Read guide →Freshwater care
Choose a catfish that fits your aquarium
Corydoras, plecos and the risks of buying a “cleaner fish” by name alone.
Read guide →Freshwater care
Angelfish, oscars and parrot cichlids compared
Three popular cichlid names with very different space and social needs.
Read guide →Wildlife & large fish
Large freshwater fish: know when not to buy
Adult size, law and safety checks for spectacular but demanding species.
Read guide →Marine care
Marine aquarium fish: compatibility before color
A realistic comparison of common and specialist saltwater animals.
Read guide →Wildlife & large fish
Identify wild, sport and food fish responsibly
Common names, local rules and safe handling for fish outside the home aquarium.
Read guide →Wildlife & large fish
Ocean giants and unusual marine fish
What these animals actually are, and how to observe them without disturbance.
Read guide →Learning resources
Make a fish afiche that teaches one clear idea
A practical poster plan for school, conservation or aquarium education.
Read guide →No matching guide. Try a species or a broader topic.