Activate & earn 10X points on ALL products & services thru 11/11* >
11,764,897 Adoptions

Swim into deep savings

Upgrade their tank, refresh aquatic filters & more

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

(1480 results)
Top Fin® Essentials Aquarium Starter Kit
6 sizes

Top Fin® Essentials Aquarium Starter Kit

(4538)
$34.99
$69.99
Options from
Save 50% on ALL 10 gallon & below Top Fin Essentials Starter Kits thru 11/29, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
+ 1 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

(253)
$16.99
Save 40% On First Autoship Order of Aquatic Watercare
Buy 2, get the 3rd 50% OFF ALL Top Fin conditioned water
+ 2 more
API® Freshwater Aquarium Master Test Kit for pH, Ammonia, Nitrite & Nitrate

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

(459)
$35.99
$39.99
Save 40% On First Autoship Order of Aquatic Watercare
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
+ 2 more
Top Fin® Large Power Filter Cartridges for Fish Tanks - 12 Count

Top Fin® Large Power Filter Cartridges for Fish Tanks - 12 Count

(300)
$17.99
$18.99
Buy Any Aquatic Filter and Get 20% Off All Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® PF-S Silenstream Aquarium Filter Cartridges - 3-12 Count
2 sizes

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

(244)
$9.59
$18.99
Options from
Buy Any Aquatic Filter and Get 20% Off All Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Plant & Shrimp Stratum Aquarium Substrate Planted Tank Substrate Shrimp Substrate
3 sizes

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

(139)
$15.99
$17.99
Options from
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Sign In & Enjoy Free Shipping Over $49
Seachem® Prime® Aquarium Water Conditioner Chlorine & Ammonia Detoxifier
4 sizes

Seachem® Prime® Aquarium Water Conditioner Chlorine & Ammonia Detoxifier

(385)
$3.19
$6.99
Options from
Save 40% On First Autoship Order of Aquatic Watercare
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
+ 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

(238)
$35.99
Options from
Save 50% on 40-75 gallon Aqueon® & Marineland® open-glass aquariums thru 11/19, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Top Fin® Bow Front Aquarium Starter Kit - 36 Gallon

Top Fin® Bow Front Aquarium Starter Kit - 36 Gallon

(501)
$143.99
$179.99
Save 20% on 20+ gallon Top Fin Essentials Starter Kits thru 11/19, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
+ 1 more
Top Fin® Cube Aquarium Essentials Starter Kit - 10 Gallon

Top Fin® Cube Aquarium Essentials Starter Kit - 10 Gallon

(14)
$44.99
$89.99
Save 50% on ALL 10 gallon & below Top Fin Essentials Starter Kits thru 11/29, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
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

(415)
$23.99
Options from
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Free Same-Day Delivery, No Order Minimum!
Top Fin® Angled Aquarium -10 Gallon

Top Fin® Angled Aquarium -10 Gallon

(175)
$89.99
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Free Same-Day Delivery, No Order Minimum!
CaribSea Super Naturals Aquarium Sand - White Fish Tank Sand

CaribSea Super Naturals Aquarium Sand - White Fish Tank Sand

(41)
$23.79
$27.99
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® All-In-One Betta Aquarium Starter Kit - 3 Gallon

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

(527)
$27.49
$54.99
Save 50% on ALL 10 gallon & below Top Fin Essentials Starter Kits thru 11/29, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
+ 1 more
Top Fin® Fascinate Column Aquarium Starter Kit

Top Fin® Fascinate Column Aquarium Starter Kit

(387)
$44.99
$89.99
Save 50% on ALL 10 gallon & below Top Fin Essentials Starter Kits thru 11/29, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
+ 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
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Sign In & Enjoy Free Shipping Over $49
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
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
+ 2 more
Top Fin® Silenstream™ Small Filter Cartridges for Fish Tanks - 6 Count

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

(67)
$9.99
$15.99
Save 40% On First Autoship Order of Aquatic Filter Media
Buy Any Aquatic Filter and Get 20% Off All Aquatic Media
+ 2 more
Top Fin® Corner Tank Aquarium Starter Kit - 6 Gallon

Top Fin® Corner Tank Aquarium Starter Kit - 6 Gallon

(403)
$42.49
$84.99
Save 50% on ALL 10 gallon & below Top Fin Essentials Starter Kits thru 11/29, price displayed
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
+ 1 more
Top Fin® Element EF-S Filter Cartridges for Fish Tanks - 3-12 Count
3 sizes

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

(388)
$6.99
$15.99
Options from
Buy Any Aquatic Filter and Get 20% Off All Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Compact Aquarium Heater - 50-150 Watt
3 sizes

Top Fin® Compact Aquarium Heater - 50-150 Watt

(524)
$15.59
$14.99
Options from
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Half Moon Aquarium - 3.5 Gallon

Top Fin® Half Moon Aquarium - 3.5 Gallon

(2102)
$34.99
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Free Same-Day Delivery, No Order Minimum!
+ 1 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
Save 25% when you buy 4+ ornaments, plastic plants & live plants, mix & match allowed
Earn 10% back in savings (that's 5X points) on ALL fish and aquatic & reptile plants thru 11/25
Top Fin® Silenstream™ Aquarium Power Filter - 10-75 Gallon
5 sizes

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

(1624)
$17.79
$18.99
Options from
Buy Any Aquatic Filter and Get 20% Off All Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Aquarium Hinged Glass Lid - 2.5-75 Gallon
7 sizes

Top Fin® Aquarium Hinged Glass Lid - 2.5-75 Gallon

(383)
$16.99
Options from
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
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
Save 25% when you buy 4+ ornaments, plastic plants & live plants, mix & match allowed
Earn 10% back in savings (that's 5X points) on ALL fish and aquatic & reptile plants thru 11/25
+ 2 more
Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes

Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner

(214)
$5.49
$4.99
Options from
Save 40% On First Autoship Order of Aquatic Watercare
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
+ 2 more
Top Fin® Pre-Conditioned Betta Aquarium Water - 1 Gallon

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

(12)
$12.99
Save 40% On First Autoship Order of Aquatic Watercare
Buy 2, get the 3rd 50% OFF ALL Top Fin conditioned water
+ 2 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
Save 25% when you buy 4+ ornaments, plastic plants & live plants, mix & match allowed
Earn 10% back in savings (that's 5X points) on ALL fish and aquatic & reptile plants thru 11/25
+ 1 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)
$8.79
$7.99
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Aqua Natural Aquarium Sand - White Fish Tank Sand

Aqua Natural Aquarium Sand - White Fish Tank Sand

(73)
$13.99
Buy any tank, get 20% OFF ALL aquarium substrate. Excludes gems.
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

(216)
$9.99
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
Free Same-Day Delivery, No Order Minimum!
Top Fin® Aquarium Air Pump
3 sizes

Top Fin® Aquarium Air Pump

(796)
$18.99
Options from
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
API® Stress Coat Tap Water Aquarium Conditioner for Tap Water Dechlorinating
6 sizes

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

(544)
$2.28
$4.99
Options from
Save 40% On First Autoship Order of Aquatic Watercare
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
+ 2 more
Seachem® Purigen® Premium Synthetic Absorbent - Aquarium Filter Media
2 sizes

Seachem® Purigen® Premium Synthetic Absorbent - Aquarium Filter Media

(68)
$9.89
$12.99
Options from
Save 40% On First Autoship Order of Aquatic Filter Media
Buy Any Aquatic Filter and Get 20% Off All Aquatic Media
+ 2 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
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
Free Same-Day Delivery, No Order Minimum!
Top Fin® Aquarium Gravel Vacuum - Small-Large
4 sizes

Top Fin® Aquarium Gravel Vacuum - Small-Large

(839)
$10.99
$9.99
Options from
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Amazon Sword Live Aquarium Plant for Fish Tanks - 4-12 in
3 sizes

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

(186)
$6.99
Options from
Save 25% when you buy 4+ ornaments, plastic plants & live plants, mix & match allowed
Earn 10% back in savings (that's 5X points) on ALL fish and aquatic & reptile plants thru 11/25
+ 1 more
Top Fin® Adjustable Aquarium Air Pump

Top Fin® Adjustable Aquarium Air Pump

(28)
$33.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Tetra® TetraMin® Tropical Flakes Fish Food Complete Diet for Tropical Fish
4 sizes

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

(303)
$4.24
$4.99
Options from
Save 40% On First Autoship Order of Aquatic Food
Buy 1 Get the 2nd 25% OFF on ALL Aquatic Food & Watercare! Excludes Top Fin® pre-conditioned water.
+ 2 more
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. ...
  8. 25
*Details available on the Promotional Terms Page.