Shop & save 20% on regular-priced items online w/ code: PETS20 thru 10/8* >

Thankful for DEALS!

Save big on fish & reptile essentials thru 11/1*

Shop all

Shop by fish

Shop by category

Shop by tank size

How to Set Up an Aquarium

Shop must-have essentials to navigate life with fish.

Fish

(281 results)
Top Fin® Pre-Conditioned Aquarium Water - Fish Tank Care - 2.5 Gallon

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

(249)
$21.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
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)
$28.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Prime® Aquarium Water Conditioner Chlorine & Ammonia Detoxifier
3 sizes

Seachem® Prime® Aquarium Water Conditioner Chlorine & Ammonia Detoxifier

(383)
$7.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
API® Freshwater Aquarium Master Test Kit for pH, Ammonia, Nitrite & Nitrate

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

(455)
$54.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 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)
$13.49
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 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)
$13.49
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Nature's Ocean Live Nutri-Seawater for Saltwater Aquariums

Nature's Ocean Live Nutri-Seawater for Saltwater Aquariums

(37)
$25.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Pre-Conditioned Betta Aquarium Water - 1 Gallon

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

(12)
$14.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes

Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner

(214)
$12.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
API® Stress Coat Tap Water Aquarium Conditioner for Tap Water Dechlorinating
4 sizes

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

(542)
$5.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Tetra® TetraMin® Tropical Flakes Fish Food Complete Diet for Tropical Fish
2 sizes

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

(299)
$14.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Tetra® 6-in-1 Aquarium Water Test Strips for Aquarium Water Testing

Tetra® 6-in-1 Aquarium Water Test Strips for Aquarium Water Testing

(77)
$39.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Aquarium Airline Tubing - Aquarium Air Pump Tubing - 8-25 ft
2 sizes

Top Fin® Aquarium Airline Tubing - Aquarium Air Pump Tubing - 8-25 ft

(102)
$8.49
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Silenstream Filter Cartridge - Fish Tank Filter Cartridges - 3 Count

Top Fin® Silenstream Filter Cartridge - Fish Tank Filter Cartridges - 3 Count

(122)
$12.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Betta Pellets Fish Food - 1 oz

Top Fin® Betta Pellets Fish Food - 1 oz

(8)
$5.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 1 more
Instant Ocean® Sea Salt for Saltwater Aquariums
2 sizes

Instant Ocean® Sea Salt for Saltwater Aquariums

(87)
$28.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Instant Ocean® Reef Crystals - Reef Salt for Marine & Saltwater Aquariums

Instant Ocean® Reef Crystals - Reef Salt for Marine & Saltwater Aquariums

(66)
$99.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Silenstream™ Small Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

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

(65)
$19.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Silenstream™ Large Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

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

(137)
$20.49
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
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)
$18.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® CN-S Corner Filter Cartridges - Fish Tank Filter Cartridges - 3-6 Count
2 sizes

Top Fin® CN-S Corner Filter Cartridges - Fish Tank Filter Cartridges - 3-6 Count

(52)
$11.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 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)
$11.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
FLUVAL Active Carbon Insert 3-Pack - Aquarium Filter Media for Fish Tanks
3 sizes

FLUVAL Active Carbon Insert 3-Pack - Aquarium Filter Media for Fish Tanks

(16)
$7.59
$9.49
Options from
Sign in & Save 25% on your first Autoship Order!
Enjoy Free Same-day delivery!
+ 1 more
Marineland® Penguin Rite Size C Power Filter Cartridges for Fish Tank Filters

Marineland® Penguin Rite Size C Power Filter Cartridges for Fish Tank Filters

(84)
$29.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Retreat™ RF-L Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

Top Fin® Retreat™ RF-L Filter Cartridges - Fish Tank Filter Cartridges - 6 Count

(109)
$20.49
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Tetra® Whisper Bio-Bag Disposable Filter Cartridge - Biological Aquarium Filter Media
2 sizes

Tetra® Whisper Bio-Bag Disposable Filter Cartridge - Biological Aquarium Filter Media

(152)
$14.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Tetra® TetraFin Goldfish Flakes Fish Food Complete Diet
2 sizes

Tetra® TetraFin Goldfish Flakes Fish Food Complete Diet

(162)
$10.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Pond Koi Fish Food Daily Diet - 4-10 lb
2 sizes

Top Fin® Pond Koi Fish Food Daily Diet - 4-10 lb

(66)
$31.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
CaribSea Aragonite Aragamax Select Substrate Saltwater Reef Substrate

CaribSea Aragonite Aragamax Select Substrate Saltwater Reef Substrate

(43)
$25.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
API® Saltwater Aquarium Master Test Kit for Saltwater Aquarium Testing

API® Saltwater Aquarium Master Test Kit for Saltwater Aquarium Testing

(10)
$59.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Tetra® PlecoWafers™ Nutritionally Balanced Fish Food for Algae Eaters Complete Diet

Tetra® PlecoWafers™ Nutritionally Balanced Fish Food for Algae Eaters Complete Diet

(8)
$12.49
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
FLUVAL AC BioMax Insert 1-Pack - Biological Aquarium Filter Media for Fish Tanks
3 sizes

FLUVAL AC BioMax Insert 1-Pack - Biological Aquarium Filter Media for Fish Tanks

(20)
$8.39
$10.49
Options from
Sign in & Save 25% on your first Autoship Order!
Enjoy Free Same-day delivery!
+ 1 more
Top Fin® Aquarium Water Conditioner - 4-16 fl oz
3 sizes

Top Fin® Aquarium Water Conditioner - 4-16 fl oz

(261)
$8.49
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Readistart Aquarium Nitrifying Bacteria Starter - 4-8 oz
2 sizes

Top Fin® Readistart Aquarium Nitrifying Bacteria Starter - 4-8 oz

(174)
$12.49
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Top Fin® Internal Filter Cartridges - IF-M - Fish Tank Filter Cartridges - 20 Gallon

Top Fin® Internal Filter Cartridges - IF-M - Fish Tank Filter Cartridges - 20 Gallon

(23)
$11.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
API® Aquarium Salt for Fish Tanks

API® Aquarium Salt for Fish Tanks

(193)
$12.99
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
API® ACCU Clear Aquarium Water Clairifier for Cloudy Aquarium Water
2 sizes

API® ACCU Clear Aquarium Water Clairifier for Cloudy Aquarium Water

(307)
$10.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
API® 5 in 1 Aquarium Test Strips for Aquarium Water Testing
2 sizes

API® 5 in 1 Aquarium Test Strips for Aquarium Water Testing

(151)
$11.99
Options from
Online Only! Save 20% on regular priced items with code PETS20 thru 10/8, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Fluval® Quick Clear Water Polishing Pad 306/307/406/407 6PK for Fish Tank Filters

Fluval® Quick Clear Water Polishing Pad 306/307/406/407 6PK for Fish Tank Filters

(18)
$11.19
$13.99
Sign in & Save 25% on your first Autoship Order!
Enjoy Free Same-day delivery!
+ 1 more
Fluval® UltraGrade Carbon - Aquarium Filter Media for Fish Tanks

Fluval® UltraGrade Carbon - Aquarium Filter Media for Fish Tanks

(10)
$15.19
$18.99
Sign in & Save 25% on your first Autoship Order!
Enjoy Free Same-day delivery!
+ 1 more
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. ...
  8. 8
*Details available on the Promotional Terms Page.