My dad wants to know how many small fish can he keep in this 40 gallon ? Like mollie small and tetra , gourami etc : r/Aquariums

First time I've ever been happy one of my fish died. : r/Aquariums

I have 3 male fancy guppies and one dwarf gourami in my 10 gallon aquarium. Can I add anything else? Maybe a platy or molly? - Quora

Aquariums for Beginners

How Many Fish in A 40 Gallon Tank – Petnanny Store

Red Tail Shark (Red Tailed Black Shark) - The Care, Feeding and Breeding of Red Tail Sharks - Aquarium Tidings

How Many Fish Can I Put in a Fish Tank? Rules for Adding More Fish – Aquarium Co-Op

Practical Fishkeeping - Spring 2019 PDF, PDF, Borneo

Glass Surfing: Why Do Fish Swim Up and Down the Glass? - PetHelpful

How Many Fish Can I Put in a Fish Tank? Rules for Adding More Fish – Aquarium Co-Op

FAQs on the Livebearing Toothed Carps, Poeciliid Fishes Disease

G N J's Aquatic Nation

The Gourami Problem