Penn-Plax Natural Rock Formation Landscapes for Aquariums and Fish Tanks

Baby Shark Betta Fish Tank Aquarium Kit with 2 Resins, 1.13 Gallon, Blue / Yellow

This aquarium kit comes with our Baby Shark themed. Rite-Bite Educational Betta Tank and 2 Baby Shark aquarium decorations. This kit is designed to help teach children the valuable lessons in responsibility and taking care of other living beings, as... ... more

Penn Plax Age-of-Magic Aquarium Decorations Aquarium Accessory | 8 H x 5.25 W x 3.75 D in | Wayfair RRW12

Add some whimsical charm and wonder to your fish tank with this fully detailed aquarium decoration. This fully colored aquatic ornament features a medium castle perched upon a rocky hill, with a cone-shaped roof, towers, archways, and stone details... ... more

The Little Mermaid Ariel on Rock Aquarium Ornament, 1.75" L X 2.8" W X 3.1" H, 3.2 OZ, Green / Red

Decorate your aquarium with The Little Mermaid ornaments. This aquarium ornament provides shelter and hiding places for your fish to alleviate stress. ... more

Educational Aquarium Tank, 1 Gallon, Blue

The Rite-Bite Fish Tank For a Betta Education is the perfect 1st fish tank for you to share with the child in your life. It has been set up specifically to help kids be able to take over the responsibility of caring for their fish quickly and easily.... ... more

Penn Plax Age-of-Magic Aquarium Decorations Aquarium Accessory | 12 H x 7.25 W x 5.75 D in | Wayfair RRW13

Add some whimsical charm and wonder to your fish tank with this fully detailed aquarium decoration. This fully colored aquatic ornament features a large castle perched upon a rocky hill, with a cone-shaped roof, towers, archways, and stone details that... ... more

Penn Plax Action-Air Aquarium Ornaments Aquarium Accessory | 5.5 H x 4.5 W x 2.5 D in | Wayfair 075

Powered by an aquarium air pump, the pirate's skeleton still mans the helm, swaying left and right with the forthcoming bubbles. This real motion, air driven ornament will provide hours of fun and entertainment inside your fish tank! Aerate Your... ... more

Penn Plax Aquarium Decoration Wood (best for furniture style stands) in Brown | 0.8 H x 9.5 W x 3.8 D in | Wayfair RR700

The Medium Deco Cliff is a natural looking resin ornament for your aquarium. The beautifully detailed cliff is full of caves and openings for your fish to explore. This beautiful natural-looking rock formation will also look great in a terrarium with... ... more

Penn Plax Aquarium Accessory in Gray | 9 H x 13 W x 6 D in | Wayfair RR992

Add some natural beauty and calming peace to your fish tank with the Bonsai Tree on Rocks Aquarium Decoration! The plastic leaves display a soothing array of greens. Not only can this aquarium decoration be fully submerged in water, it’s also great for... ... more

Penn Plax Novelty Aquarium Decoration Wood (best for furniture style stands) in Brown | 1 H x 3.8 W x 8.3 D in | Wayfair RR971

The Striped Sail Shipwreck Aquarium Ornament adds a colorful exciting underwater shipwreck theme to your fish tank. This ornament replicates a sunken ship that lays on a rock deep in the ocean waiting to be discovered. The vibrant red, white, and green... ... more

Penn Plax Novelty Aquarium Decoration Wood (best for furniture style stands) in Brown | 2.2 H x 11.8 W x 15 D in | Wayfair RR3110

Add some ominous charm and vivid color to your fish tank with the Large Wrecked Jet! This fully detailed aquarium decoration makes for a great centerpiece, and is perfect for larger fish tanks! Most small and medium fish can swim through and around it,... ... more

Penn Plax Aquarium Decoration Wood (best for furniture style stands) in Brown/White | 2.4 H x 15 W x 7.5 D in | Wayfair RR3109

Add some ominous charm and vivid color to your fish tank with the Large Tan Plane Coral Scape! This fully detailed aquarium decoration makes for a great centerpiece, and is perfect for larger fish tanks! Most small and medium fish can swim through and... ... more

Penn Plax Novelty Aquarium Decoration Wood (best for furniture style stands) in Blue/Brown | 2.6 H x 13.8 W x 6 D in | Wayfair RR3107

Add some ominous charm and vivid color to your fish tank with the Large Blue Plane Coral Scape! This fully detailed aquarium decoration makes for a great centerpiece, and is perfect for larger fish tanks! Most small and medium fish can swim through and... ... more

Penn Plax Aquarium Accessory | 3.5 H x 2.5 W x 2.5 D in | Wayfair BSHRB1

Bring some joy and doo doo doo doo doo doo into your fish tank with some Baby Shark! These small, double-sided aquarium ornaments are great for decorating a child’s fish tank, especially if they love singing along to the catchy tune! This 2-Piece... ... more

Penn Plax Coral Reef Aquarium Decoration – Arch w/ Green Silicone Plant – Large | 6.5 H x 9.5 W x 5 D in | Wayfair RR3151

In addition to featuring several silicone plants that sway with your tank’s water, our Coral Reef aquarium decorations provide numerous caves and hideouts for fish to swim through. Furthermore, an array of vibrant colors replicates the natural beauty... ... more

Penn Plax Deco-replicas Sapphire Crystal Cave Aquarium in Blue | 3.5 H x 4.75 W x 3.5 D in | Wayfair RR3045

Add some sparkles and shine to your fish tank with this colorful piece! This translucent, sapphire blue aquarium decoration features a swim-though that doubles as a hiding space, which helps reduce fish stress and boredom. It’s also perfect for... ... more

Penn Plax Aquarium Decoration Wood (best for furniture style stands) in Brown | 1.9 H x 14 W x 5 D in | Wayfair RR701

Rock Grotto Aquarium Ornament This realistic rock look is appealing to all aquarium creatures. They will vie for their favorite spot. Fish love the in and out action just like small ocean caves. Choose the large, medium or corner design for your style... ... more

Penn Plax Aquarium Accessory, Granite | 3.5 H x 6 W x 5.5 D in | Wayfair RR1070

Deco-Replicas presents the Granite Aquarium Ornament & Hideaway 8 Piece Set (Small, Medium, and Large). These rock formations are made from sand of real granite, and is not made of plastic or resin. The texture mimics a variety of rough surfaces found... ... more

Penn Plax Aquarium Decoration in Black/Brown | 1.6 H x 10 W x 4.5 D in | Wayfair RR926

This medium-sized aquarium decoration is perfect for your fish tank. Measuring at 5 x 2 x 4 inches, this decor relieves boredom of your fish by giving them a new area to explore, offering you the beauty of the pirate treasure ship in your aquarium. |... ... more

Penn Plax Aquarium Decoration Wood (best for furniture style stands) in Brown | 2.3 H x 19.3 W x 4.8 D in | Wayfair RRB13

Make sure your fish are flush with cash, because they might have to pay a toll at the Penn Plax Troll Bridge Aquarium Decor. This fun bridge is crafted with amazing detail with a bridge and rock outcrops. The bridge has spaces for fish to hide and swim... ... more

Penn Plax Aquarium Accessory in Blue/Brown | 7 H x 13 W x 4 D in | Wayfair RR931

Add some ominous charm and wonder to your fish tank with the sunken treasure ship! this fully detailed aquarium decoration makes for a great centerpiece or accent, and is perfect for anything pirate or nautical-themed! the smallest fish can swim... ... more

Penn Plax Aquarium Accessory | 14.5 H x 16.5 W x 5.25 D in | Wayfair RR963

Add some ominous charm and mischief to your fish tank! This fully detailed aquarium decoration makes for a great centerpiece, and is perfect for anything pirate themed! This piece fits comfortably inside 20+ gallon tanks! Made of safe and durable... ... more

Penn Plax Aquarium Decoration in Brown/Green/Red | 8.7 H x 16.4 W x 11.25 D in | Wayfair RR960

Deco-Replicas presents the Medium Striped Sail Shipwreck Aquarium Decoration by PENN-PLAX. Add some ominous charm and wonder to your fish tank with the Striped Sail Shipwreck! This fully detailed aquarium decoration makes for a great centerpiece or... ... more

Penn Plax Aquarium Pump in Black | 0.6 H x 5 W x 2.2 D in | Wayfair SAB10

Silent Air B10 Aquarium Air Pump is an essential addition to any aquarium owner's toolkit. This air pump ensures a continuous supply of oxygen to your fish tank, which is crucial in cases of emergency power outages or when you need to transport fish. |... ... more

Penn Plax Edward Novelty Aquarium Decoration Wood (best for furniture style stands) in Brown | 1.6 H x 10.3 W x 4.6 D in | Wayfair RR702

Rock Grotto Aquarium Ornament This realistic rock look is appealing to all aquarium creatures. They will vie for their favorite spot. Fish love the in and out action just like small ocean caves. Choose the large, medium or corner design for your style... ... more

Penn Plax Aquarium Accessory, Crystal in Black/Blue | 11 H x 3.75 W x 2 D in | Wayfair CIF21

This filter quietly delivers crystal clear water throughout the aquarium. Its unique design allows it to unobtrusively utilize unused corner space. Furthermore, it cycles water at 120 gallons per hour (gph) for fish tanks up to 20 gallons in size. It’s... ... more

Penn Plax Aquarium Accessory in Blue/Brown | 4.5 H x 13.5 W x 2 D in | Wayfair RR933

Add some ominous charm and wonder to your fish tank with the sunken battleship! This fully detailed aquarium decoration makes for a great centerpiece or accent, and is perfect for anything nautical-themed! most extra small fish can swim through and... ... more

Penn Plax Aquarium Accessory | Wayfair JPRB1

From the creative minds at Universal Studios, bring some chaos into your fish tank with this 2-Piece Aquarium Ornament Bundle. These small, officially licensed Aquarium Ornaments are perfect for desktop aquariums, and are great for anyone who loves the... ... more

Penn Plax Disney’s Frozen 4-piece Mini Aquarium Decoration Bundle | Wayfair FZR1B

From the creative minds at Disney, bring some melodic joy and excitement from Arendelle into your fish tank with this Frozen 4-Piece Aquarium Decoration Bundle! These mini, officially licensed aquarium ornaments are perfect for desktop aquariums and... ... more

Penn Plax SpongeBob 7-Piece Mini Aquarium Ornament Set in Black/Blue/Yellow | 2 H x 1 W x 1 D in | Wayfair SBRK2NH

Turn your fish tank into your very own Bikini Bottom with this 7 Piece Mini Aquarium Ornament Set, which includes SpongeBob, Patrick, Sandy, Squidward, Gary, Mr. Krabs, and Plankton. Made of Safe and Durable Resin: All included pieces are inspected... ... more

Penn Plax Novelty Aquarium Decoration Wood (best for furniture style stands) in Brown | 2 H x 13 W x 4.5 D in | Wayfair RR3108

Deco-Wrecks presents the Large Gray Submarine Coral Scape Aquarium Decoration by PENN-PLAX. Add some ominous charm and vivid color to your fish tank with the Large Gray Submarine Coral Scape! This fully detailed aquarium decoration makes for a great... ... more

Penn Plax Rectangle Aquarium Decoration Wood (best for furniture style stands) in Blue/Brown | 1 H x 11.5 W x 4.3 D in | Wayfair FDK108

The Finding Dory 0.5 Gallon Betta Tank Kit is a themed aquarium setup inspired by the Disney sequel "Finding Dory." It's designed as a small and compact aquarium suitable for keeping a Betta fish, which are known for their vibrant colors and character.... ... more

Penn Plax Age-of-magic Extra Large Wizard’s Castle Part A Aquarium Decoration | 14 H x 12.75 W x 6.5 D in | Wayfair RRW9

Add some whimsical charm and wonder to your fish tank with this fully detailed aquarium decoration. This fully colored aquatic ornament features an Extra large gray castle perched upon a rocky hill, with blue cone-shaped roofs, towers, archways, and... ... more

Penn Plax Age-of-magic Large Wizard’s Castle Aquarium Decoration | 10 H x 7.25 W x 5.5 D in | Wayfair RRW8

Add some whimsical charm and wonder to your fish tank with the Large Wizard’s Castle Aquarium Decoration detailed aquarium decoration. This fully colored aquatic ornament features a large gray castle perched upon a rocky hill, with a cone-shaped roof,... ... more

Penn Plax Age-of-magic Extra Large Wizard’s Castle Part B Aquarium Decoration | 15.5 H x 13 W x 9 D in | Wayfair RRW10

Add some whimsical charm and wonder to your fish tank with this fully detailed aquarium decoration. This fully colored aquatic ornament features an Extra large gray castle perched upon a rocky hill, with blue cone-shaped roofs, towers, archways, and... ... more

Penn Plax Aquarium Decoration in Brown/Red | 16 H x 20.5 W x 20.75 D in | Wayfair RR961

Deco-Replicas presents the Large 2-Piece Striped Sail Shipwreck Aquarium Decoration by PENN-PLAX. Add some ominous charm and wonder to your fish tank with the 2-Piece Striped Sail Shipwreck! This fully detailed aquarium decoration makes for a great and... ... more

Penn Plax Aquarium Accessory in Black/Brown/Pink | 7.5 H x 4 W x 2.75 D in | Wayfair RR4070

Deco-Replicas presents The Aerating Lighthouse. This functional ornament brings a natural, yet playful atmosphere to any tank or aquarium. Great for Freshwater and Saltwater applications. Fun & Entertaining: The top contains bright and colorful beads... ... more

Planting Aquarium Tank, 2.65 Gallon, Transparent

Beautiful glass plant terrarium and small fish aquarium combined into one aquatic ecosystem that creates a lush planter environment. Grow live plants along with your fish. Terrarium kit features a 2.65 gallon crystal clear glass tank, aquaponic... ... more

Natural Rock, 8" L X 13.75" W, Large, Brown / Green

Penn-Plax's instant 1 piece natural decor takes the guess work out of creating a beautiful aquascape inside of your aquarium. Simply place this decor piece in your tank and you will not need anything else. This will sure be a great addition to your tank. ... more