Caring for Fish & Aquariums

Learn how to care for your fish and aquarium with our best tips and advice.
two silver arowena fish in water
Silver Arowana Fish Species Profile
Goldfish bubbles
Gas Bubble Disease (GBD) in Freshwater Fish
saltwater aquarium
Optimal Tank Temperatures for a Saltwater Aquarium
Fishbowl and an aquarium on a sideboard
Convert a Freshwater Aquarium to Saltwater Aquarium
Black and White Striped Fish in Fish Tank
How to Quickly Reduce Nitrate in a Fish Tank
Algae on rocks
Curing Nuisance Green Hair Algae in Your Saltwater Aquarium
Saltwater Aquarium
Controlling Algae in Your Saltwater Aquarium
goldfish in aquarium
Swim Bladder Disorder in Aquarium Fish
Aquarium with blue, orange and blue-striped fish swimming in front of underwater leaves
Guidelines for Stocking Your Aquarium
Guppies
Hard Water and Aquarium Fish
Goldfish swimming in a fishbowl.
What Should You Name Your Pet Fish?
White cloud mountain minnow fish with gray scales and orange fins closeup
White Cloud Mountain Minnow Fish Species Profile
Gobies fish with orange tail and yellow head
Reef Safe Saltwater Aquarium Fish
Gold barb fish swimming with gold and black-spotted scales closeup
Barb: Fish Species Profile
Red algae (Peyssonnelia squamaria) and member of Serpulidae's family on a sponge
Aquarium Red Slime Algae Causes and Solutions
An aiptasia anemone
Eliminating Aiptasia Anemones From Saltwater Aquariums
Pink Coralline algae on aquarium glass
How to Grow Coralline Algae in a Saltwater Aquarium
Goldfish Swimming In Aquarium
How and Why You Should Seed a New Aquarium
Blue legged hermit crab
Reef Tank Janitors: Hermit Crabs and Snails
Leaffish
South American Leaffish Species Profile
Stunning red killifish swimming in an aquarium.
Guide to Killifish
Girl using a chemical test kit to measure the quality of water in a home aquarium
Aquarium Water Parameters to Control for Healthy Fish
aquarium with fish and coral
How to Build Your Own Aquarium Chiller
ph water measurement
Managing Water pH in Saltwater Aquariums
Black widow tetra
Black Widow Tetra Fish Species Profile
Phosguard by SeaChem
The 6 Best Phosphate (PO4) Removing Products, According to a Veterinarian
A child looking at a fish tank
What to Know Before Buying an Aquarium
Amoeba
How to Culture Your Own Infusoria at Home
Botia lohachata - Yo Yo Loach
Yoyo Loach Fish Species Profile
Buenos Aires Tetra
Buenos Aires Tetra Fish Species Profile
Seahorse in fish tank
Seahorses in Saltwater Aquariums
Close up of the lateral line on fish scale
Hole-in-the-Head Disease in Saltwater Fish
Harlequin rasbora fish with yellow and black scales swimming closeup
Harlequin Rasbora (Red Rasbora) Fish Breed Profile
Tropical fish in saltwater aquarium
Are Quarantine Tanks (Qt's) Necessary for Your Saltwater Aquariums?
Ocellaris Clownfish and Anemone
Clownfish and Anemone Matches
Portrait of goldfish in a bowl
How to Preserve the Slime Coat on Fish
Helostoma temminckii - Kissing Gourami
Kissing Gourami (Kisser Fish) Species Profile
Schreitmuller's silver dollar (Metynnis hypsauchen), side view
Silver Dollar Fish Species Profile
Colorful Tropical Fish and Coral In Tank Aquarium
Reef Tank Temperatures: How High Is Too High?
Little fish in fish tank or aquarium, gold fish, guppy and red fish, fancy carp with green plant, underwater life.
Swimming, Balance, Oxygen and Food Consumption in Fish
Slime Algae
Eradicate Slime Algae in an Aquarium
Yellow Tang Fish
The Function of Gills in Fish
Hermit Crab (Anomura spp) on the sea shore.Cousine Island.Seychelles
8 Top Reef-Safe Sand Sifters
Checklist for Starting a Saltwater Aquarium at Home
Checklist for Starting a Saltwater Aquarium at Home
Art Aquarium 2015
Breeding Aquarium Fish, Basic Breeding Tips For Beginners
Amano shrimp sitting on a plant
Amano Shrimp Species Profile
Freshwater fish tank decorated with live and fake plants
Freshwater Aquarium Fish Diseases
German blue ram fish with yellow and blue scales and deep orange eyes closeup
German Blue Ram Species Profile
A 15 year old comet goldfish in a 100 gallon tank
Comet Goldfish Species Profile
Two Pictus catfish in an aquarium
Pictus Catfish Species Profile
How to control and prevent brown algae in aquariums
How to Remove Brown Algae From Your Aquarium
Lobophyllia lobed brain coral
12 Corals to Consider for Your Reef Aquarium
Coral tank with no substrate for undergravel filter
What to Know About Undergravel Filters
measuring glass aquarium
Build Your Own Glass Aquarium
Goldfish (Carassius auratus) swimming in large rectangular fish tank.
Basic Types of Aquarium Filtration Systems
fish swimming in an aquarium tank
Aquarium Heater Size Guide
fishes in a marine aquarium
The 11 Most Common Mistakes Made by Saltwater Aquarium Keepers
fish swimming in an aquarium with algae in the background
How to Control and Prevent Algae in Your Fish Tank
Japanese Rice Fish
Purpose and Types of Aquarium Substrate
Dirty Aquarium Water
Causes and Fixes for Yellow or Brown Aquarium Water