TODAY ONLY! EXTRA 20% OFF thousands of items with: SAVE20, valid 10/12* >

Deals on fish essentials

Valid thru 10/12*

Shop now

Shop by category

Shop by fish

Shop by tank size

Shop by brand

How to Set Up an Aquarium

Learn what you'll need & how to put it together for a happy fish habitat.

Fish

(1578 results)
Fluval® Plant & Shrimp Stratum Aquarium Substrate Planted Tank Substrate Shrimp Substrate
3 sizes

Fluval® Plant & Shrimp Stratum Aquarium Substrate Planted Tank Substrate Shrimp Substrate

(137)
$15.99
$17.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Sign In & Enjoy Free Shipping Over $49
Top Fin® Essentials Aquarium Starter Kit
6 sizes

Top Fin® Essentials Aquarium Starter Kit

(4522)
$41.99
$69.99
Options from
Save 50% on 10 gallon & below Top Fin Essentials Starter Kits thru 11/1, price displayed
Free Same-Day Delivery, No Order Minimum!
Top Fin® Large Power Filter Cartridges - Fish Tank Filter Cartridges - 12 Count

Top Fin® Large Power Filter Cartridges - Fish Tank Filter Cartridges - 12 Count

(298)
$18.99
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4th FREE on ALL aquatic media, online only.
+ 2 more
Top Fin® Pre-Conditioned Aquarium Water - Fish Tank Care - 2.5 Gallon

Top Fin® Pre-Conditioned Aquarium Water - Fish Tank Care - 2.5 Gallon

(251)
$16.99
Online Only! Save 20% on your purchase with code SAVE20
Save 40% On First Autoship Order of Aquatic Watercare
+ 2 more
Aqueon® Standard Glass Rectangle Aquarium Glass Fish Tank 2.5 Gallon - 55 Gallon
7 sizes

Aqueon® Standard Glass Rectangle Aquarium Glass Fish Tank 2.5 Gallon - 55 Gallon

(411)
$13.49
$26.99
Options from
Save 50% on Aqueon® & Marineland® open-glass aquariums thru 10/12
Buy Any Open Glass Tank, Get 20% OFF Top Fin Glass Hood, online only
+ 1 more
API® Freshwater Aquarium Master Test Kit for pH, Ammonia, Nitrite & Nitrate

API® Freshwater Aquarium Master Test Kit for pH, Ammonia, Nitrite & Nitrate

(457)
$35.99
$39.99
Save 40% On First Autoship Order of Aquatic Watercare
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® PF-S Silenstream Aquarium Filter Cartridges - Fish Tank Filter Cartridges - 3-12 Count
2 sizes

Top Fin® PF-S Silenstream Aquarium Filter Cartridges - Fish Tank Filter Cartridges - 3-12 Count

(242)
$8.99
$9.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4th FREE on ALL aquatic media, online only.
+ 2 more
Marineland® Open Glass Aquarium Glass Fish Tank 10 Gallon - 75 Gallon
3 sizes

Marineland® Open Glass Aquarium Glass Fish Tank 10 Gallon - 75 Gallon

(228)
$18.49
$36.99
Options from
Save 50% on Aqueon® & Marineland® open-glass aquariums thru 10/12
Buy Any Open Glass Tank, Get 20% OFF Top Fin Glass Hood, online only
+ 1 more
Seachem® Prime® Aquarium Water Conditioner Chlorine & Ammonia Detoxifier
4 sizes

Seachem® Prime® Aquarium Water Conditioner Chlorine & Ammonia Detoxifier

(383)
$3.99
$6.99
Options from
Save 40% On First Autoship Order of Aquatic Watercare
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® FX6 Aquarium Canister Filter for Fish Tank Filtration

Fluval® FX6 Aquarium Canister Filter for Fish Tank Filtration

(226)
$406.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Aquarium & Stand Ensemble - 36 Gallon

Top Fin® Aquarium & Stand Ensemble - 36 Gallon

(104)
$199.99
$399.99
Save $200 on Top Fin® Aquarium & Stand Ensemble - Fish Tank & Stand Ensemble - 36 Gallon, price displayed
Top Fin® Bow Front Aquarium Starter Kit - 36 Gallon

Top Fin® Bow Front Aquarium Starter Kit - 36 Gallon

(501)
$107.99
$179.99
Save 40% on 20+ gallon Top Fin Essentials Starter Kits, price displayed
Online Only! Save 20% on your purchase with code SAVE20
+ 1 more
Top Fin® Element EF-S Filter Cartridges - Fish Tank Filter Cartridges - 3-12 Count
3 sizes

Top Fin® Element EF-S Filter Cartridges - Fish Tank Filter Cartridges - 3-12 Count

(386)
$8.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4th FREE on ALL aquatic media, online only.
+ 3 more
Fluval AC Power Filter for Fish Tank Filtration
4 sizes

Fluval AC Power Filter for Fish Tank Filtration

(172)
$49.99
$54.99
Options from
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Cube Aquarium Essentials Starter Kit - 10 Gallon

Top Fin® Cube Aquarium Essentials Starter Kit - 10 Gallon

(6)
$53.99
$89.99
Online Only! Save 20% on your purchase with code SAVE20
CaribSea Super Naturals Aquarium Sand - White Fish Tank Sand

CaribSea Super Naturals Aquarium Sand - White Fish Tank Sand

(37)
$23.79
$27.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Silenstream™ Small Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

Top Fin® Silenstream™ Small Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

(67)
$15.99
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4th FREE on ALL aquatic media, online only.
+ 3 more
Top Fin® All-In-One Betta Aquarium Starter Kit - 3 Gallon

Top Fin® All-In-One Betta Aquarium Starter Kit - 3 Gallon

(524)
$32.99
$54.99
Save 50% on 10 gallon & below Top Fin Essentials Starter Kits thru 11/1, price displayed
Online Only! Save 20% on your purchase with code SAVE20
+ 1 more
Top Fin® Fascinate Column Aquarium Starter Kit

Top Fin® Fascinate Column Aquarium Starter Kit

(387)
$53.99
$89.99
Save 50% on 10 gallon & below Top Fin Essentials Starter Kits thru 11/1, price displayed
Online Only! Save 20% on your purchase with code SAVE20
+ 1 more
Top Fin® Aquarium Sand - Black - Fish Tank Substrate - 5-20 lb
2 sizes

Top Fin® Aquarium Sand - Black - Fish Tank Substrate - 5-20 lb

(6)
$9.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Sign In & Enjoy Free Shipping Over $49
Top Fin® Silenstream™ Aquarium Power Filter - Fish Tank Power Filter - 10-75 Gallon
5 sizes

Top Fin® Silenstream™ Aquarium Power Filter - Fish Tank Power Filter - 10-75 Gallon

(1616)
$17.79
$19.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Nature's Ocean Live Nutri-Seawater for Saltwater Aquariums

Nature's Ocean Live Nutri-Seawater for Saltwater Aquariums

(37)
$21.39
$25.99
Save 40% On First Autoship Order of Aquatic Watercare
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Aquarium Hinged Glass Lid - Fish Tank Lid, Glass Aquarium Canopy - 2.5-75 Gallon
7 sizes

Top Fin® Aquarium Hinged Glass Lid - Fish Tank Lid, Glass Aquarium Canopy - 2.5-75 Gallon

(366)
$16.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Buy Any Open Glass Tank, Get 20% OFF Top Fin Glass Hood, online only
+ 2 more
Top Fin® Half Moon Aquarium - 3.5 Gallon

Top Fin® Half Moon Aquarium - 3.5 Gallon

(2102)
$34.99
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Pre-Conditioned Betta Aquarium Water - 1 Gallon

Top Fin® Pre-Conditioned Betta Aquarium Water - 1 Gallon

(12)
$12.99
Online Only! Save 20% on your purchase with code SAVE20
Save 40% On First Autoship Order of Aquatic Watercare
+ 2 more
Top Fin® Compact Aquarium Heater - Fish Tank Heater - 50-150 Watt
3 sizes

Top Fin® Compact Aquarium Heater - Fish Tank Heater - 50-150 Watt

(520)
$14.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Internal Filter Cartridges - IF-S - Fish Tank Filter Cartridges - 10 Gallon

Top Fin® Internal Filter Cartridges - IF-S - Fish Tank Filter Cartridges - 10 Gallon

(36)
$7.99
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4th FREE on ALL aquatic media, online only.
+ 3 more
Top Fin® Small Live Aquarium Plant Variety Pack for Fish Tanks - 4 in

Top Fin® Small Live Aquarium Plant Variety Pack for Fish Tanks - 4 in

(3)
$17.99
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4rd FREE on ALL live aquatic plants
Omega™One Frozen Blood Worms Fish Food High-Protein Frozen Fish Food for Aquarium Fish

Omega™One Frozen Blood Worms Fish Food High-Protein Frozen Fish Food for Aquarium Fish

(214)
$9.99
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
Aqua Natural Aquarium Sand - White Fish Tank Sand

Aqua Natural Aquarium Sand - White Fish Tank Sand

(73)
$13.99
Online Only! Save 20% on your purchase with code SAVE20
Seachem® Purigen® Premium Synthetic Absorbent - Aquarium Filter Media for Fish Tanks
2 sizes

Seachem® Purigen® Premium Synthetic Absorbent - Aquarium Filter Media for Fish Tanks

(66)
$9.19
$12.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4th FREE on ALL aquatic media, online only.
+ 3 more
Top Fin® Java Fern Live Aquarium Plant for Fish Tanks - 4-12 in
2 sizes

Top Fin® Java Fern Live Aquarium Plant for Fish Tanks - 4-12 in

(4)
$6.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4rd FREE on ALL live aquatic plants
+ 2 more
Top Fin® Premium Aquarium Gravel - Classic Beach - Fish Tank Substrate - 5 lb

Top Fin® Premium Aquarium Gravel - Classic Beach - Fish Tank Substrate - 5 lb

(68)
$7.99
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Omega™One Frozen Bloodworms Fish Food High-Protein Frozen Fish Food for Aquarium Fish

Omega™One Frozen Bloodworms Fish Food High-Protein Frozen Fish Food for Aquarium Fish

(192)
$9.99
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
Top Fin® Aquarium Air Pump - Fish Tank Air Pump
3 sizes

Top Fin® Aquarium Air Pump - Fish Tank Air Pump

(796)
$10.09
$18.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes

Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner

(214)
$5.49
Options from
Save 40% On First Autoship Order of Aquatic Watercare
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Stress Coat Tap Water Aquarium Conditioner for Tap Water Dechlorinating
6 sizes

API® Stress Coat Tap Water Aquarium Conditioner for Tap Water Dechlorinating

(542)
$2.28
$4.99
Options from
Save 40% On First Autoship Order of Aquatic Watercare
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® TetraMin® Tropical Flakes Fish Food Complete Diet for Tropical Fish
4 sizes

Tetra® TetraMin® Tropical Flakes Fish Food Complete Diet for Tropical Fish

(299)
$4.24
$4.99
Options from
Save 40% On First Autoship Order of Aquatic Food
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Anubias Barteri Live Aquarium Plant for Fish Tanks - 4 in

Top Fin® Anubias Barteri Live Aquarium Plant for Fish Tanks - 4 in

(51)
$6.99
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4rd FREE on ALL live aquatic plants
+ 1 more
Top Fin® Amazon Sword Live Aquarium Plant for Fish Tanks - 4-12 in
3 sizes 1 color

Top Fin® Amazon Sword Live Aquarium Plant for Fish Tanks - 4-12 in

(184)
$6.99
Options from
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, get the 4rd FREE on ALL live aquatic plants
+ 1 more
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. ...
  8. 25
*Details available on the Promotional Terms Page.