How to Care for Saltwater Fish

Find answers to your questions about caring for saltwater fish and marine aquariums.
illustration of saltwater fish
The 28 Best Beginner Fish for a Saltwater Aquarium
Blue green chromis fish with light blue and silvery scales
The Blue Green Chromis Is a Beautiful Addition to Saltwater Aquariums
Swallowtail angelfish (Genicanthus sp.), front view
Swallowtail Angelfish Profile
Clownfish in marine tank
Saltwater Aquarium Fish Compatibility
Powder-blue surgeonfish (Acanthurus leucosternon)
16 Tang and Surgeonfish Species to Know
Snowflake Eel
How to Add a Snowflake Eel to Your Aquarium
Juvenile Brown-banded Bamboo Shark, Chiloscyllium punctatum,
This Is What to Expect When Owning a Brownbanded Bamboo Shark
Yellow tang tropical fish with coral backdrop
Learn All About the Yellow Tang Fish
Bird Wrasse Fish
Can the Bird Fish Really Fly?
Six Line Wrasse with coral background
Learn All About the Six Line Wrasse
Orchid Dottyback on reef
Dottyback: Fish Species Profile
Balantiocheilus melanopterus - Bala Shark in a tank
Should You Put Bala Shark in Your Aquarium?
Firefish Goby
Is a Firefish Goby Right for Your Saltwater Aquarium?
Hawaiian squirrelfish or Striped Squirrelfish.
How to Care for a Striped Squirrelfish in an Aquarium
8 Cutest Aquarium Critters in the Sea
The 8 Critters That Will Make Your Aquarium Impossibly Adorable
peppermint angelfish
Most Unique and Rare Saltwater Aquarium Fish
Ocellaris Clownfish and Anemone
Types of Clownfish and the Anemones That Love Them
Tiger barb or Sumatra barb Puntius tetrazona tropical aquarium fish
What Is the Scientific Name for Your Favorite Fish With the Letter T?
Calcinus laevimanus (Hawaiian hermit, dwarf zebra hermit crab) - with sponge
9 Top Marine Hermit Crabs for Reef Tanks
Blue legged hermit crab
These Tank Creatures Help Clean up Your Aquarium
Black Saddled Toby (Canthigaster valentini)
Pufferfish Profiles, Facts, Information and Pictures
Lemonpeel Angelfish
Caring for a Lemonpeel Angelfish in Your Aquarium
Acanthurus japonicus
How to Take Care of the Powder Brown Tang
Tigertail Seahorse
Is the Tigertail Seahorse Right for Your Aquarium?
Lionfish Species Profile
How to Collect Your Own Tropical Aquarium Fish
How to Collect Your Own Tropical Aquarium Fish
Clown Triggerfish
7 Aggressive Saltwater Fish and How to Keep Them
Yellow Longnose Butterflyfish
How to Maintain Yellow Longnose Butterflyfish in Your Aquarium
A starfish in the sand
What to Know About Buying Starfish
Portrait of Mandarin Fish Synchiropus splendidus, Banda Neira Island, Indonesia
Mandarinfish (Dragonets) Care Information
Common seahorse in watter
Can Your Saltwater Aquarium Sustain a Pair of Seahorses?
Moorish idol fish
How to Care for One of the Most Difficult Aquarium Fish
Flame Hawkfish
Learn about the Famed Flame Hawkfish
Flame Angelfish
Flame Angelfish: An Eye-Catching Addition to a Tropical Marine Tank
Striped sailfin tang
Territorial Sailfin Tangs
Redlip Blenny
Blenny Fish Species Profile
Ornate Wrasse (Thalassoma Pavo) Colorful Fish Underwater
Read This If You're Thinking About Adding a Wrasse to Your Aquarium
Pygoplites diacanthus, sub-adult, Egypt
Read This Before You Get a Regal Angelfish for Your Aquarium
Yellowtail Coris (Wrasse)
Is the Yellowtail Coris Wrasse Fish Right for Your Aquarium?
black sturgeonfish
Get to Know the Convict Tang (Convict Surgeonfish)
rockmover wrasse
The Fascinating and Challenging Dragon Wrasse Fish
Adult Emperor Angelfish
Emperor Angelfish: Species Profile
Pacific blue tang
Finding Dory: the Pacific Blue Tang
Achilles Tang or Surgeon Fish
Achilles Tang for Your Saltwater Tank?
Orange shoulder tang fish
Should You Get an Orange Shoulder Tang for Your Aquarium?
Black Triggerfish on coral reef background. Molokini, Maui, Hawaii.
Black Triggerfish Profile and Photos
Camelback Shrimp
Should You Add Camelback Shrimp to Your Aquarium?
Yellow Eye Kole Tang
Get to Know the Reef-Friendly Kole Tang for Your Tank
Colourful Juvenile Chevron Tang or Hawaiian Bristletooth Ctenochaetus
Consider a Chevron Tang for Your Home Aquarium
Pinktail Durgon (Melichthys vidua), near Kona
Pinktail Triggerfish Are Fish That's a Joy to Own
Red Saddleback Clownfish closeup with sea anemone - Thailand
Meet the Beautiful Fire Clownfish
Bluespine Unicornfish (Naso unicornis)
Big, Beautiful Naso Tang for Your Tank
Black & White Bandit Angelfish
Black and White Bandit Angelfish Profile
Goby fish in an aquarium
Using Sand Sifting Gobies as Your Substrate Janitors
Tetra serpae with white spot disease
Life Cycle of Saltwater Ich (Cryptocaryon irritans)
Japanese Swallowtail Angelfish
Reef Tank Safe Angelfish
Lemonpeel Angelfish
Angelfish Family Pomacanthidae Diet and Feeding
Learn How to Pick the Best Saltwater Angelfish for Your Aquarium
Hermit crab in shell. Dardanus megistos in aquarium
Reef-Safe Saltwater Aquarium Invertebrates
Saltwater aquarium
What Marine Foods Are Best for Saltwater Fish and Invertebrates