New General Stock Just Landed — Freshwater, Saltwater, Inverts + More!

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New General Stock Just Landed — Freshwater, Saltwater, Inverts + More! *

  • LABOR DAY SALE - 20% off

    Celebrate the holiday weekend with 20% off on livestock, supplies, and services at Big Fish Aquarium. From freshwater favorites to saltwater showpieces, you’ll find healthy, vibrant stock ready for your tank—plus deals on dry goods and essentials.

    Saturday, August 30 – Monday, September 1

    SHOP SAVINGS

  • SALTWATER CORALS

    Vibrant. Resilient. Stunning.
    Handpicked for growing reef tanks.

    Add Color to Your Tank

  • JUST IN: NEW IN-STORE ARRIVALS!

    Freshwater Favorites. Marine Must-Haves. Get them before they're gone.

    SHOP NOW

  • NEW FRESHWATER ARRIVALS

    Bright colors. Peaceful swimmers.
    Perfect for planted tanks.

    SHOP FRESHWATER

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STAFF PICKS

Discover Big Fish Aquarium’s top staff picks! Our WYSIWYG collection features vibrant freshwater fish, unique marine species, and healthy invertebrates—hand-selected for color, health, and compatibility. Shop expert-curated livestock to elevate your tank today.

SS Coral Frag Single Blastomussa SS Coral Frag Single Blastomussa
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SS Coral Frag Single Blastomussa
$69.98
Green Chromis Green Chromis
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Green Chromis
$9.99
Frozen Seaweed Delight - Cubes - SFB Frozen Seaweed Delight - Cubes - SFB
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Frozen Seaweed Delight - Cubes - SFB
$12.00
Green underwater scene with a yellow fish among aquatic plants.

Chicago Aquarium Services & Design

Colorful underwater scene with vibrant orange and purple sea anemones and two fish swimming nearby. One fish is predominantly blue and yellow with stripes.
A blue and purple Betta fish swimming inside a glass tank with white rocks at the bottom.

JOIN THE BIG FISH MEMBERSHIP PROGRAM

Clownfish swimming in a dark blue aquarium with rocks and coral

Included:

$5 coupon for livestock every month

10 gallons of free RO freshwater with $10 purchase

2-day warranty on fish out of quarantine

Free basic strip test

A freshwater aquarium with various small fish swimming among green aquatic plants and a few dried leaves on the substrate, with some fish near a pinkish sponge or coral piece on the substrate.

Included:

$10 Livestock coupon every month 

10 gallons of free RO freshwater with $10 purchase 

7-day guarantee on fish out of QT Free advanced water tests

5% Discount on all purchases

Underwater scene with various green and purple aquatic plants

Included:

$20 Livestock coupon every month 

10 gallons of free RO freshwater with $10 purchase 

7-day guarantee on fish out of QT Free advanced water tests

10% Discount on all purchases

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View fullsize Our new map puffer getting acclimated to his tank mates #saltwateraquarium #reeftanksofinstagram #aquariumhobby #aquariumsofinstagram #saltwaterfishtank #saltwaterfish
View fullsize Just a few new additions this week at Big Fish Aquarium. Chilli Oscar’s Nemo Oscar’s True Altums angels Red Marlboro discus Turquoise Discus Pigeon Blood Discus Ctenapoma Ansorgi Electric Catfish Jardini Arowana
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