Welcome to Think Fish

The online tropical fish resource for everything you need to know about freshwater aquarium fish and tropical fish keeping

Tools and Calculators
fish tank calculator

Work out a fish tanks...everything

Use our calculator tools to work out a fish tanks volume, weight, surface area and stocking level.
All the conversions and formulas you need.
USE THE FISH TANK CALCULATORS

Forum

Visit our forum and join a discussion

A good place to find some helpful fish keepers and ask, or answer, a few fish keeping conundrums
VISIT THE FISH FORUM

Fish Profiles & Compatibility
guppy fish on black
siamese fighting fish fish on black
platy fish on black
molly fish on black
cardinal neon fish on black

Searchable Fish Profiles

Find the right tropical fish for your aquarium from our fish profiles
SEE FISH PROFILES

Community Creator

Add your chosen fish to our web app and see if they are compatible
GO TO COMMUNITY CREATOR

Species Articles

Find out more about popular fish

Get some detailed information on the hobbys most popular and interesting fish.

Fish Starter Guides

Start keeping fish the right way

Keeping tropical fish can be a tricky hobby, heres some articles which should help

Keeping our Fish Users Informed

Think Fish Reviews

We occasionally review products that our users and visitors might find useful. Check out our Tetra Aquaart Tank Review and tell us what you think!

Featured Articles

Interesting aquarium fish & fish tank articles

Increase your fish keeping knowledge with our interesting collection of articles
SEE MORE ARTICLES



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