EXTRA 20% OFF thousands of items online with code: SAVE20 thru 5/28* >

Dive into fish deals

Valid thru 5/31*

Shop by category

Shop by fish

Shop by brand

Shop by tank size

How to Set Up an Aquarium

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

Fish

(427 results)
Top Fin® Pre-Conditioned Aquarium Water

Top Fin® Pre-Conditioned Aquarium Water

(248)
$16.79 - $16.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
API® Freshwater Aquarium Master Test Kit

API® Freshwater Aquarium Master Test Kit

(445)
$35.99
$39.99
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Seachem® Prime® Aquarium Water Conditioner
4 sizes

Seachem® Prime® Aquarium Water Conditioner

(375)
$3.19 - $16.62
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Element EF-S Filter Cartridges
3 sizes

Top Fin® Element EF-S Filter Cartridges

(382)
$8.99 - $17.99
35% off first order with Autoship
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® PF-S Silenstream Aquarium Filter Cartridges
2 sizes

Top Fin® PF-S Silenstream Aquarium Filter Cartridges

(238)
$8.99 - $17.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
Nature's Ocean Live Nutri-Seawater

Nature's Ocean Live Nutri-Seawater

(32)
$20.50
$25.99
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Pre-Conditioned Betta Water

Top Fin® Pre-Conditioned Betta Water

(10)
$11.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® CN-S Corner Filter Cartridges
2 sizes

Top Fin® CN-S Corner Filter Cartridges

(52)
$8.99 - $14.99
35% off first order with Autoship
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® Internal Filter Cartridges

Top Fin® Internal Filter Cartridges

(34)
$7.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes

Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner

(206)
$3.94 - $8.00
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
API® E.M. Erythromycin Fish Bacterial Infection Treatment

API® E.M. Erythromycin Fish Bacterial Infection Treatment

(75)
$17.88
$26.49
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Seachem® Purigen® Premium Synthetic Absorbent
2 sizes

Seachem® Purigen® Premium Synthetic Absorbent

(60)
$9.19 - $15.79
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
API® Stress Coat Tap Water Aquarium Conditioner
6 sizes

API® Stress Coat Tap Water Aquarium Conditioner

(532)
$2.28 - $37.58
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Quick Start Aquarium Cycling Water Conditioner
3 sizes

API® Quick Start Aquarium Cycling Water Conditioner

(306)
$8.68 - $17.38
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Silenstream Filter Cartridge - 3pk

Top Fin® Silenstream Filter Cartridge - 3pk

(122)
$8.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
API® Aquarium Salt
3 sizes

API® Aquarium Salt

(193)
$8.78 - $112.48
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® 6 N 1 Aquarium Water Test Strips

Tetra® 6 N 1 Aquarium Water Test Strips

(71)
$14.97
$14.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Hikari® Micro Pellets® Tropical Fish Food

Hikari® Micro Pellets® Tropical Fish Food

(108)
$6.99
$8.99
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Betta Pellets Fish Food

Top Fin® Betta Pellets Fish Food

(8)
$3.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Liquid Super Ick Cure

API® Liquid Super Ick Cure

(160)
$6.99
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Instant Ocean® Sea Salt
2 sizes

Instant Ocean® Sea Salt

(85)
$22.39 - $59.99
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Instant Ocean® Reef Crystals Aquarium Reef Salt
2 sizes

Instant Ocean® Reef Crystals Aquarium Reef Salt

(66)
$25.92 - $79.99
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Fin® Silenstream™ Large Filter Cartridges

Top Fin® Silenstream™ Large Filter Cartridges

(137)
$14.99
35% off first order with Autoship
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® Retreat™ RF-L Filter Cartridges

Top Fin® Retreat™ RF-L Filter Cartridges

(109)
$14.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
FLUVAL Active Carbon Insert 3-Pack
3 sizes

FLUVAL Active Carbon Insert 3-Pack

(12)
$5.99 - $12.99
35% off first order with Autoship
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® Penguin Rite Size C Power Filter Cartridges

Marineland® Penguin Rite Size C Power Filter Cartridges

(84)
$19.97
$23.99
35% off first order with Autoship
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® TetraPond Koi Vibrance

Tetra® TetraPond Koi Vibrance

(52)
$48.97
$48.99
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL pond food & watercare thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Internal Filter Cartridges

Top Fin® Internal Filter Cartridges

(21)
$7.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
API® FIN & BODY CURE POWDER

API® FIN & BODY CURE POWDER

(68)
$16.38
$17.99
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Silenstream™ Small Filter Cartridges

Top Fin® Silenstream™ Small Filter Cartridges

(65)
$14.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
API® Guide Fish Problem Solving General Cure

API® Guide Fish Problem Solving General Cure

(62)
$16.38
$23.49
35% off first order with Autoship
Buy 1, get the 2nd 25% OFF ALL API® food & water care products (excludes pond) thru 5/31
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® TetraMin Tropical Flakes Fish Food
4 sizes

Tetra® TetraMin Tropical Flakes Fish Food

(295)
$4.24 - $47.99
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Instant Ocean Reef Crystals Reef Salt 200 Gal

Instant Ocean Reef Crystals Reef Salt 200 Gal

(1)
$84.77
$99.69
35% off first order with Autoship
Sign In & Enjoy Free Shipping Over $49
Seachem® Prime®
2 sizes

Seachem® Prime®

(9)
$52.11 - $88.99
35% off first order with Autoship
Sign In & Enjoy Free Shipping Over $49
Top Fin® Tropical Flakes Fish Food
3 sizes

Top Fin® Tropical Flakes Fish Food

(30)
$3.99 - $12.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Pro Power Filter Media Pack
4 sizes

Top Fin® Pro Power Filter Media Pack

(46)
$7.99 - $16.99
35% off first order with Autoship
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® Aquarium Water Conditioner
3 sizes

Top Fin® Aquarium Water Conditioner

(259)
$4.99 - $9.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Fin® Aquarium Readistart Nitrifying Bacteria Starter
2 sizes

Top Fin® Aquarium Readistart Nitrifying Bacteria Starter

(174)
$7.99 - $10.49
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® FX5 Filter Foam Inserts Aquarium Filter Media

Fluval® FX5 Filter Foam Inserts Aquarium Filter Media

(5)
$17.99
35% off first order with Autoship
Online Only! Save 20% on your purchase with code SAVE20
Buy 3, Get the 4th FREE on All Aquatic Media - Online Only!
+ 2 more
Hikari® Algae Wafers™ Fish Food
2 sizes

Hikari® Algae Wafers™ Fish Food

(154)
$6.99 - $15.49
35% off first order with Autoship
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. ...
  8. 11
Legit ScriptDot Pharmacy
Download on the App StoreDownload on the Google Play Store
Copyright © 2026 Petsmart LLC
RecallsTerms of UsePrivacy PolicyInterest-Based AdsCA Supply Chain ActCA Privacy Rights
*See Promotional Terms Page for details. Exclusions may apply. While supplies last. Prices & selection may vary by store & online.