20 Cool Fish Tank Decoration Ideas

When owning a fish tank, it isn’t just about the fish. It’s really about the entire fish tank experience. To help solve this problem, here is some guidance on some of the best fish tank decorations and ideas to offer some uniqueness in setting up an aquarium and decorating your fish tank.

From pebbles to fish tank liners, if you have a tank you should really think about everything. Fish tank decor plays a huge role in the enjoyment of your fish tank. Decorating your fish tank is the icing on the cake that completes the entire fish tank experience.

fish swimming in a well decorated fish tank

If you are searching for fish tank decorations that will please you and your fish, you’ve come to the right place. There are truly endless possibilities when it comes to fish tank decor and decorating your tank that we got to thinking…

What Are The Best Fish Tank Decoration?

Below are our thoughts and fish tank ideas on what makes a cool fish tank, other than the fish themselves. You could spend a vast fortune on decor and accessories for your tank, however, we wanted to keep our list affordable but include some very awesome ideas for your fish tank decorations.

Sponge Bob Fish Tank Decorations

 fish tank decor and ideasSponge Bob makes for classic fish tank decor. After all, the setting is a pineapple under the sea, so naturally, this can make for a fantastic fish tank idea. The possibilities are seemingly endless for all things Sponge Bob when it comes to your fresh or saltwater fish tank. Creating Bikini Bottom using Sponge Bob Fish tank decorations can enhance the lives of your fish, especially if they have a good sense of humor.

Dive into the whimsical world of Bikini Bottom with these SpongeBob SquarePants fish tank decoration ideas that will bring a splash of fun and excitement to your aquarium. Let your aquatic pets embark on thrilling adventures alongside their favorite characters, as they explore iconic landmarks from the beloved animated series. Whether you’re an avid fan of SpongeBob and his quirky friends or simply seeking a creative and lively theme for your fish tank, these enchanting decorations are sure to make a lasting impression and create an underwater haven that’s bursting with life and laughter.

Star Wars Fish Tank Decorations

fish tank decorations

The force is strong with this fish tank. This is the perfect fish tank decor for the Star Wars enthusiast. Whether you find inspiration in the dark side or the light, these tanks will blow your mind. From the Degaba System to the moons of Endor the sheer awesomeness of these creative fish tank ideas are awesome.

Check out the Star Wars Fish Tank Decorations

Buddha Fish Tank Decorations

There is something calming and serene about Buddha-inspired fish tank decorum. With these decorations, you will be in a state of bliss and no harm. Your fish will be happy you made the choice to create a calming fish tank environment.

Immerse your aquatic sanctuary in a realm of tranquility and harmony with Buddha fish tank decor that exudes serenity and spiritual elegance. By incorporating these calming elements into your aquarium, you’ll create an environment that promotes relaxation and reflection for both you and your aquatic pets. Allow the gentle presence of Buddha statues and zen-inspired accessories to transform your fish tank into a peaceful oasis, where the soothing ambiance invites onlookers to pause, unwind, and appreciate the beauty of your underwater haven.

Zen Fish Tank Decorations

Much like the Budha fish tank, Zen fish tank decorations take bliss to the next level. Your fish will be inspired by the natural setting they are now swimming in. Zen fish tank decorations may not be the path to enlightenment, but at least it is one step closer.

If you are the Buddha of fish, consider adding a Zen-inspired tank with natural decorations to make your aquatic friends feel at home. Not only will they be captivated by their surroundings and live in peace, but it’s also one step closer to nirvana!

Check out the Zen Fish Tank Decoration Ideas

Dragon Fish Tank Decorations

Dragon tank decor is perfect if you are into Dungeons and Dragons, or if you are inspired by medieval decorations that conjure adventure. You can even go a step further and name your fish after characters like Merlin or King Arthur.

Unleash the mystical allure of ancient legends and mythical creatures with these captivating Dragon Fish Tank Decorations that will transform your aquarium into a realm of fantasy and wonder. By incorporating these awe-inspiring elements, you’ll create an enchanting underwater world where dragons reign supreme, and your aquatic pets can embark on thrilling adventures. Let your imagination soar as you explore the fascinating possibilities of dragon-themed decor, infusing your fish tank with an air of mystery and enchantment that captivates the hearts and minds of all who behold it.

Classic Pirate Fish Tank Decorations

Ahoy, mateys! Embark on a swashbuckling adventure with these classic Pirate Fish Tank Decorations that will transform your aquarium into a thrilling treasure trove of hidden gems and pirate lore. By incorporating these captivating elements, you’ll create a nautical world where your aquatic pets can explore sunken ships, mysterious caves, and forgotten treasures. Let the spirit of adventure and intrigue guide you as you design a pirate-themed fish tank that evokes the excitement of the high seas and captures the imagination of buccaneers young and old alike. Arrr!

Pirate fish tank decorations are the true classic. Perhaps a bit overdone, but when done right your fish will be sailing the seven seas properly.

Game of Thrones Fish Tank Decorations

Themed fish tanks based on popular shows such as Game of Thrones are all the rage. Nothing is cooler than a fish tank based on fan fiction. With Game of Thrones, there are so many options to check out. Let your fish battle it out. Winter is coming and with that, let’s venture into the realm of Westeros with these enthralling Game of Thrones fish tank decorations that will immerse your aquarium in the intrigue and drama of the acclaimed fantasy series.

By incorporating these captivating elements inspired by the Seven Kingdoms, you’ll create a world where your aquatic pets can explore iconic landmarks, encounter powerful houses, and witness epic battles. Let your imagination run wild as you design a themed fish tank that pays homage to the thrilling and complex world of Game of Thrones, captivating fans and newcomers alike with its rich detail and fascinating allure.

Anime Fish Tank Decorations

anime fish tank decor

Dive into the vibrant and captivating world of anime with these imaginative fish tank decor ideas that will immerse your aquarium in the excitement and wonder of your favorite animated stories. By incorporating iconic elements and beloved characters from various anime series, you’ll create a dynamic underwater realm where your aquatic pets can embark on thrilling adventures alongside their animated counterparts.

Let your passion for anime guide you as you design a fish tank that showcases the unique artistry and enchanting storytelling that has captivated fans around the globe, creating a visually stunning and engaging environment for all to enjoy.

If you are a fan of anime these fish tank decoration ideas are for you. Making superhero samurai fish is what it is all about. Check out these Anime fish tank decoration ideas.

Skull Fish Tank Decorations

Embrace the mysterious and intriguing world of the macabre with these skull fish tank decorations that will transform your aquarium into a hauntingly beautiful underwater realm. By incorporating these captivating elements, you’ll create an environment where your aquatic pets can explore the enigmatic allure of skulls, bones, and other eerie relics.

Let your creativity take a walk on the dark side as you design a fish tank that exudes a sense of mystique and wonder, capturing the imagination of all who dare to gaze upon its chilling beauty and mesmerizing charm.

Halloween Fish Tank Decorations

Welcome to a spine-chilling underwater world with these bewitching Halloween fish tank decoration ideas that will transform your aquarium into a haunting yet enchanting haven for your aquatic pets.

My favorite holiday, Halloween is cool for many different reasons. Creating a fish tank environment based solely on Halloween can still last all year long. From spooky to fun, check out our Halloween fish tank decor for some killer ideas.

By incorporating elements of the supernatural, such as ghosts, witches, and ghouls, as well as classic Halloween symbols like pumpkins, cobwebs, and tombstones, you’ll create a spooktacular environment that captures the spirit of All Hallows’ Eve. Let your creativity run wild as you design a fish tank brimming with eerie ambiance and bewitching charm, providing a thrilling visual experience that’s sure to delight and send shivers down the spines of all who dare to explore its depths.

Christmas Fish Tank Decorations

Many people love to change up their fish tank decorations. And, I, myself am no exception to this rule. Christmas allows for just this. Creating this festive mood for your fish will usher in the holiday with extra oomph. Your fish, as they are snug in their bed will be dreaming of Santa’s return. Christmas fish tank decorations will get you in the spirit even faster.

Immerse your aquatic pets in the magic and warmth of the holiday season with these enchanting Christmas fish tank ambiance ideas that will transform your aquarium into a festive underwater wonderland. By incorporating elements of the Yuletide season, such as twinkling lights, miniature Christmas trees, snowflakes, and ornaments, you’ll create a cozy and inviting environment that captures the essence of Christmas cheer. Let your creativity sparkle as you design a fish tank filled with joy and merriment, providing a visually delightful experience that’s sure to captivate and spread holiday cheer to all who gaze upon its festive beauty.

Thanksgiving Fish Tank Decorations

We typically eat turkey on Thanksgiving so decorating your fish tank in this fashion won’t leave your fish nervous, unlike decorations for say, Lent. Adding a festive Thanksgiving touch to your fish tank will tie the whole celebration together.

These heartwarming Thanksgiving fish tank decoration ideas will transform your aquarium into a cozy and festive underwater haven. By incorporating elements inspired by the autumn harvest, such as miniature pumpkins, colorful leaves, cornucopias, and rustic accents, you’ll create a warm and inviting environment that reflects the essence of Thanksgiving. Let your creativity flow as you design a fish tank that radiates warmth and appreciation, providing a visually comforting experience that’s sure to charm and delight all who gather around to admire its seasonal beauty.

Bonsai Fish Tank Decorations

A bit more artistic, and less cheeky style of fish tank decorating is the Bonsai fish tank decoration theme. Creating an environment that is tiny and miniature while honoring nature is what Bonsai is all about. This type of fish tank decoration is a timeless classic and looks fabulous in classic and modern homes.

Create a serene and harmonious underwater environment with a Bonsai fish tank, which combines the beauty of aquascaping with the elegance and tranquility of Japanese Bonsai art. This unique design concept will transform your aquarium into a stunning and peaceful aquatic haven for your fish to thrive.

Egyptian Fish Tank Decorations

Swim like an Egyptian. Add Egyptian fish tank decorations such as the great pyramids to your fish ecosystem. Your fish will love playing Pharaoh and Cleopatra. Sand and desert themes are always very special looking when it comes to fish tanks.

Crystal Fish Tank Decorations

If you are into the power of precious gems and crystals this might be the fish tank decor for you. From astrology to the stars, there are limitless amounts of creativity abound in creating a tank in this motif. Channel the power of crystals and the mythical undersea to give good vibes to your fish.

Asian Fish Tank Decorations

I am not sure why Asian-themed fish tank decor is so popular, but it is. Maybe it is the clean lines of the architecture or the calming way it compliments the flowing nature of fish tank environments. Either way creating an Asian fish tank ecosystem is perfect for those who love Eastern philosophy and aesthetics of old-world art.

Fish Tank Castle Decorations

The classic castle. We added this category of fish tank decorations although it can be combined with many other decorations on the list. The castle is perfect, giving your fish the fun of swimming through medieval landscapes.

Beer Bottle Fish Tank Decorations

This one is for the beer lover. There is something kind of cool about beer bottle fish decorations. Showcasing your favorite brews as your fish glide by, swimming.

Disney Fish Tank Decorations

Disney not only does some great stuff on-screen and now you can take that magic and put it in your fish tank. Disney fish tank decorations are a great way to showcase your kids (and yours) favorite Disney classic film.

Are you ready to add a touch of magic to your fish tank? We’re here to help you transform your aquarium into a whimsical underwater world with some delightful Disney-inspired decorations. From enchanting castles and beloved characters to colorful plants and themed ornaments, we’ve got all the tips and ideas you need to create a captivating aquatic escape that brings your favorite Disney stories to life.

Get more Disney Inspired Fish Tank Ideas

Mermaid Fish Tank Decorations

The mythical mermaid was said to lure sailors to their watery graves. Fish need not be scared, however. Mermaid fish tank decor will only make them happy.

Discover the magic of mermaid-themed fish tank decorations with these three enchanting elements: a captivating resin mermaid statue, vibrant artificial coral reefs and seagrass meadows, and mesmerizing lighting and bubbles. Transform your aquarium into an underwater paradise that will captivate the imagination of both children and adults alike. Dive into the mystical world of mermaids and create an aquatic haven for your fish to explore.

Looking to add some Mermaid fun to your fish tank? Check out these mermaid fish tank decorations to get the decorating juices flowing.

The Importance of Fish Tank Decoration

A well-decorated fish tank not only adds aesthetic appeal to your home but also provides your aquatic pets with a stimulating and comfortable environment. Decorating your fish tank can be both fun and challenging, as you need to consider various factors such as the size of your tank, the type of fish you have, and their specific needs. This article will provide you with a variety of fish tank decoration ideas, ranging from natural to artificial and themed decorations, while also offering tips on creating a balanced and functional environment for your fish.

Decorating your fish tank is essential for several reasons. First, it creates a visually appealing habitat that mimics the natural environment of your fish, helping to reduce stress and promote overall well-being. Second, it offers hiding spots and resting areas for your fish, which are crucial for their health and happiness. Finally, a well-decorated tank can also improve water quality by providing surfaces for beneficial bacteria to grow/

Natural Decorations

  • Live Plants

Live plants are an excellent addition to any fish tank as they provide numerous benefits, such as oxygen production, removal of harmful chemicals, and shelter for your fish. Some popular live plants include Java Fern, Anubias, and Amazon Sword. Ensure that you choose plants suitable for your tank’s lighting and water conditions.

  • Rocks and Driftwood

Incorporating rocks and driftwood into your fish tank design can create a natural and visually appealing landscape. You can use various types of rocks, such as lava rocks, slate, and river rocks, as well as driftwood pieces like Malaysian or Mopani wood. Make sure to arrange these elements carefully to avoid damaging your tank or harming your fish.

Artificial Decorations

  • Artificial Plants

If you prefer low-maintenance decorations, artificial plants are a great alternative to live plants. They come in various shapes, sizes, and colors, allowing you to create a vibrant and diverse underwater environment. However, ensure that you choose high-quality, non-toxic materials that won’t harm your fish.

  • Ornaments and Figurines

Adding ornaments and figurines to your fish tank can be a fun way to express your creativity and personalize your aquarium. You can find a wide range of options, from castles and pirate ships to coral reefs and sunken treasure chests. Just be sure to select ornaments made from safe materials and avoid overcrowding your tank.

Themed Decorations

  • Aquascaping Themes

Aquascaping is the art of arranging aquatic plants, rocks, and driftwood in a visually pleasing manner. You can create various themes, such as a lush underwater garden, a rocky mountain landscape, or a serene Zen-inspired design. Research different aquascaping styles, and let your creativity guide you in designing your unique underwater world.

  • Pop Culture Themes

If you’re a fan of pop culture, why not incorporate your favorite movies, TV shows, or video games into your fish tank design? From SpongeBob SquarePants to Harry Potter, you can find plenty of themed decorations that will add a touch of whimsy and fun to your aquarium.

Creating a Balanced and Functional Environment

While decorating your fish tank, it’s essential to maintain a balance between aesthetics and functionality. Ensure that you provide enough open swimming space for your fish, as overcrowding can lead to stress and health issues. Additionally, consider the specific needs of your fish species, such as hiding spots, resting areas, and suitable water conditions.

Maintenance and Cleaning Tips

Regular maintenance and cleaning are crucial to keeping your fish tank decorations looking their best. Gently scrub artificial plants and ornaments with a soft brush to remove algae buildup, and rinse them thoroughly with clean water before returning them to the tank. For live plants, trim dead leaves and stems regularly to promote healthy growth.


Decorating your fish tank can be an enjoyable and rewarding process, allowing you to create a beautiful and comfortable environment for your aquatic pets. By considering various decoration ideas, from natural elements like live plants and rocks to artificial and themed options, you can design a unique and visually appealing underwater world. Remember to maintain a balanced and functional environment, and keep up with regular maintenance to ensure the health and happiness of your fish.


  1. Can I use decorations from outside, like rocks and wood, in my fish tank? Yes, but make sure to properly clean and sterilize them first. Boil rocks and wood for at least 30 minutes to kill any harmful bacteria or parasites.

  2. How often should I clean my fish tank decorations? It’s recommended to clean artificial decorations every 2-4 weeks, depending on the algae buildup. Live plants should be trimmed regularly to remove dead leaves and stems.

  3. Do all fish species require hiding spots and resting areas? While most fish appreciate hiding spots and resting areas, some species may have specific requirements. Research your fish’s natural habitat and preferences to provide the most suitable environment.

  4. How can I decorate my fish tank if I have limited space? Even with limited space, you can still create a visually appealing and functional environment for your fish. Choose smaller decorations, such as mini artificial plants or petite ornaments, and arrange them strategically to maximize open swimming space.

  1. Can I change the decorations in my fish tank frequently? Yes, but keep in mind that frequent changes can stress your fish. It’s best to make gradual changes over time, allowing your fish to adjust to their new surroundings
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