For some, only a really big fish tank will do

Big Fish, Small Fish..

How Many Fish Per Gallon? - Fish Vet

Where do all those big fish keep going? - Practical Fishkeeping

Choosing the Proper Flow Rate for Your Aquarium

Aquarium - Wikipedia

Fish Tank Sizes & Types: How to Choose the Right Aquarium

What Size Tank for Goldfish? - INJAF

Let's Keep Koi in an Aquarium

12 Large Fish for Freshwater Aquariums

I have a 55 gallon fish tank. What parts do I need for it? - Quora

Vastu for Fish aquarium: Where to place aquarium in living room?

What is the best use of a big fish tank other than keeping fish in it? - Quora

Just had to share my big tank full of little fish : r/Aquariums