Deals on fish & aquariums

Build your most beautiful underwater ecosystem yet

Marine & Freshwater

(537 results)
Top Paw® X-Large Adhesive Dog Pads - 28" x 34"
(241)
$59.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® Ultra XXL Dog Pads - 27.5"L x 44"W
(1255)
$39.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® Double Door Folding Wire Dog Crate with Divider Panel
5 sizes
(881)
$30.79 - $69.89
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® XX-Large Dog Pads 150 Count
(46)
$79.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® Dog Pads - 23"L x 24"W
3 sizes
(1209)
$5.99 - $39.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® Single Door Folding Wire Dog Crate
7 sizes
(883)
$22.49 - $169.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Jumbo Dog Pads - 54"L x 37"W
(105)
$34.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® X-Large Adhesive Dog Pads - 28" x 34"
(1734)
$29.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® XX-Large Dog Pads 50 Count
(18)
$59.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw® Exercise Pen
2 sizes
(235)
$55.99 - $62.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Indoor & Outdoor Portable Dog Crate
4 sizes 1 color
(414)
$46.89 - $67.89
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
 Top Paw® Soft-Sided Pop-Up Playpen
(103)
$41.99
$59.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Extra-Tall Walk-Through Pet Gate
(34)
$65.49
$94.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Geo Cuddler Dog Bed
3 sizes
(158)
$14.97 - $24.97
Top Paw Carbon Training Pads
(169)
$39.99
Buy 1, Get the 2nd 25% ALL Disposable Dog Pads
Save 35% On Your First Autoship Order!
+ 3 more
Top Paw Disposable Diapers 30 Pack
5 sizes
(150)
$19.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® 24" Folding Crate
2 colors
(110)
$25.39 - $29.79
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Plush Grey Crate Mat
7 sizes
(198)
$11.99 - $48.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Expandable Plastic Pet Gate
(152)
$24.89
$29.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Disposable Male Wraps for Dogs, with Swift-Dry® Technology
5 sizes
(86)
$17.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw Blue Dog Faces Cuddler Dog Bed
3 sizes
(90)
$14.97 - $24.97
Top Paw® Dog Pad Holder
(387)
$26.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® Nail Grinder with LED Light
(34)
$39.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® Dog Print Cuddler Dog Bed
3 sizes
(236)
$14.97 - $29.97
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Indoor/Outdoor Elevated Dog Bed
2 sizes
(379)
$30.99 - $38.69
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw Washable Diapers
3 sizes
(154)
$19.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® Dog Crate Replacement Pan
5 sizes
(313)
$15.49 - $25.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Wave & Bone Cuddler Dog Bed
(31)
$5.97
$11.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Disposable Male Wrap Dog Diapers
4 sizes
(775)
$12.99 - $14.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® Waves Cooling Bolster Dog Mat
(39)
$12.47
$24.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Paw & Tushy Fresh & Clean Scent Wipes
(94)
$9.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® All-In-1 With Oatmeal Dog Shampoo, Conditioner, Deodorizer & Moisturizer - Fresh & Clean
2 sizes
(226)
$9.99 - $15.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw Word & Bones Pillow Dog Bed
2 sizes
(41)
$9.97 - $17.47
Top Paw® Purple Paws Poop Bags
3 sizes
(55)
$4.99 - $11.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Top Paw® Standard Dog Leash: 6-ft long
2 sizes 5 colors
(96)
$6.99 - $6.99
Buy 1 Get The 2nd 50% Off All Collars, Leashes & Harnesses
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Paw® Hello Summer Cuddler Dog Bed
(30)
$5.97
$11.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Top Paw® Cheetah Dog Leash: 4-ft long, 1-in wide
(16)
$9.99
$19.99
Buy 1 Get The 2nd 50% Off All Collars, Leashes & Harnesses
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Top Paw® Flea Pet Comb
(97)
$2.99
Buy 1, Get the 2nd 25% off ALL Flea & Tick
Save 35% On Your First Autoship Order!
+ 3 more
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. ...
  7. 14

Explore Our Extensive Range of Fish Supplies 

At PetSmart, we offer a comprehensive selection of supplies for both freshwater and marine fish enthusiasts. Whether you're setting up a new aquarium or maintaining an existing one, our range of products ensures your aquatic pets thrive. From aquarium decor to essential maintenance tools, find everything you need to create a vibrant underwater world. 

Freshwater and Marine Fish Supplies 

Our collection includes a variety of aquarium accessories and pet fish supplies designed to cater to the unique needs of both freshwater and marine environments. Explore our selection of aquarium decor to enhance the beauty of your tank, and discover top-quality marine aquarium supplies to support the health of your aquatic life. 

Essential Aquarium Maintenance 

Maintaining a healthy aquarium requires the right tools and knowledge. Our range of aquarium maintenance products includes everything from filters to water conditioners, ensuring your tank remains a safe and clean environment for your fish. Learn how to maintain pH levels and keep your aquarium filter running efficiently with our expert tips. 

Frequently Asked Questions (FAQs) 

What maintenance does a fish tank need? 
Regular maintenance is crucial for a healthy aquarium. This includes cleaning the tank, changing the water, and checking the filter and pH levels. 
Can I put tap water in my fish tank? 
Tap water can be used in your fish tank, but it should be treated with a water conditioner to remove harmful chemicals like chlorine. 
Should an aquarium filter be on all the time? 
Yes, an aquarium filter should run continuously to maintain water quality and provide a healthy environment for your fish. 
How to maintain pH level in an aquarium? 
To maintain the pH level in your aquarium, regularly test the water and use pH adjusters as needed. Consistent water changes also help stabilize pH levels.