Top 25 Best Aquarium Decorations

Top 25 Best Aquarium Decorations

Best Aquarium Decorations: It’s hard to define what the best aquarium decorations are, with so many to choose from, including rocks, caves, driftwood, coral, and more.

Regardless of the type of decoration you are looking for, it is important to choose a high quality product.

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Make sure your water chemistry is not affected so your fish can enjoy it as much as you do.

If you are looking for good options, we have found some of the best decorations and have divided them into different categories so you can find exactly what you are looking for.

If you, as an in-house designer, don’t go out and play, choosing your tank decor can be a frustrating process.

That is why I created this guide to make it easier for you.

In this article you will learn:

Seven simple things to consider before choosing your decorations.
We will talk about 10 types of decorations that you can use as inspiration.
At the end I will present some of my favorite ideas for decorating aquariums.

Regardless of which form of the best aquarium decor you are looking for, it is more important to carefully select the highest quality products that are safe for your aquarium residents. In other words, only consider aquarium decorations that are specifically designed for this purpose.

Actually, it might be difficult to determine which decorations are suitable for aquariums as many of them are available in the market and generally consist of corals, caves, rocks, floating woods and the like. That’s why you may end up buying a worthwhile investment if you choose a credible brand.

Whatever you choose, always make sure the decor doesn’t negatively affect the chemistry of the tank water, so that your pet fish enjoys a safe, clean and natural haven. In short, go for those made just to hold and beautify aquariums.

The good news for you today is that the following aquarium decorating reviews and some buying guides covered in this article can provide you with informative information so you get exactly what you fish for.


Top 25 Best Aquarium Decorations – Aquarium & Tank Decor


1. Aquarium Ohko Dragon Stone Rock Mixed Sizes

The dragonstone gets its name because it resembles dragon scales. It has an interesting green-brown color and a layered appearance with lots of cracks and crevices.

This is a great decoration because it is light, durable and stackable without affecting the chemistry of the water.

They come in different sizes and shapes and each pack is different. Since it is 100% natural stone, there may be differences in color and size.

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2. Driftwood

Natural drift wood is a popular addition to many aquariums and can help create a natural and simple feel. It is also a great hiding place for shy fish.

Driftwood can be bought in many stores and is generally very safe. However, you can fish floating wood from rivers and streams and add it to your tank without spending money.

You should be careful and make sure to quarantine wood from wild sources. If you don’t, you risk adding harmful microbes and parasites, which could seriously make your fish sick.

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3. Penn-Plax Nickelodeon SpongeBob Aquarium Ornament

Are you looking for unique aquarium decorations that don’t have a big hole in your pocket? Then you are absolutely right with us. Try this cool decoration and give your pet fish a great place to hide and enjoy life in the tank.

This ornament is harmless for marine and freshwater applications. It is built on a solid base, so it will not tend to float when immersed in water. Its size is good enough to fit almost any home aquarium right away. This does not require a lot of maintenance since you only need to clean it thoroughly and wash it with warm water.

What makes it a smart choice is that it specifically serves as an ideal accent for any aquarium, regardless of size. Please note that the use of chemical based detergents is not recommended when cleaning to avoid damaging the fish.

However, some disadvantages of decorating this aquarium are the slightly faded color. The edges of these jewels must be sanded thoroughly to avoid damaging your pet fish.

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4. Marina Naturals Rock Outcrop

This large and beautiful piece simulates a natural environment for your fish. It is made of a safe, non-toxic material that does not change the chemistry of the water, looks like a natural rock, and is suitable for any aquarium environment.

At 20cm in size, this piece works well as a standalone decoration, but it can also be useful for adding texture and interest when combined with other plants and decorations.

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5. Aquarium Stones And Rocks

There are many attractive stones, pebbles, and stones on the market that serve as a great addition to many aquariums. They are also ideal for natural themed tanks that comfort fish by mimicking their natural habitat.

You can also add wild stones to your aquarium. However, before doing this, it is important that you cook the stones for an hour before adding them to avoid the introduction of harmful substances / organisms.

Also note that some stones, such as spike rocks, are sharp and can harm your fish and should be avoided.

Attractive rock options include glass rocks, ice rocks, river rocks, zebra stones, and rainbow rocks.

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6. Penn Plax Squidward Easter Island Home Aquarium Ornament

Large aquarium decorations are definitely a must-have if you have a large tank in which your most valuable fish swim, play, and move. It’s nice to know that the decor on this fish tank is a decent size where your fish can comfortably move around and enjoy their new incubator.

This is fairly easy to set up and will not shake when positioned correctly. It is a point of attraction that all children will love. In fact, this may be one of the best gifts you can give a child interested in keeping fish or aquariums.

Interestingly, its price is quite cheap considering its fresh and distinctive appeal. This is a great center when you have a Betta fish.

Be that as it may, the safety of this decoration is somewhat questionable since the paint seems to be toxic and peel off easily, which can be dangerous for fish. The eye holes and inner edges of these jewels must be properly polished to avoid injury to fish or entrapment.

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Aquarium Decorations Castle

7. uxcell Aquarium Resin Turtle Ramp Rock Basking Stone Decor

This giant stone is not only the perfect match for a turtle shell, but can also be used for aquarium design.

It comes with suction cups so you can place it anywhere on the tank and rest assured it stays in place. Because this stone looks so realistic, you may be surprised at how light it really is.

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8. Caves

Caves can give your aquarium an interesting and natural look and give fish an ornament under which they can swim and interact.

In keeping prey, many hobbyists recommend adding items under which these fish can hide for safety reasons: caves serve as an attractive hiding place for such species.

While natural stones in the wild can be used as caves, you should cook these stones for at least an hour before adding them to your aquarium to kill harmful microbes and parasites.

PVC pipes can also be used. Make sure all plastics are quarantined before adding them to your tank to ensure they are safe and that there are no chemicals leaking.

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9. Marina Décor

This is a little expensive aquarium decoration, but it looks elegant and real. It appears to be more ideal for turtle and reptile setups where it would not be completely submerged in water.

Aquarium holders should lightly sand this decor, especially around the edges to avoid damaging the fish. It can serve as the center of the aquarium and your pet fish would love to play and swim through this cool decor. This could be best seen under a bright LED lighting system.

This decoration can immediately sink and anchor at the bottom of the tank and may bubble a little for a while. However, it appears impeccably organic when immersed in water. This is useful for larger tanks as it can be a fascinating piece and a lovely addition to the aquarium.

Two minor issues that you should watch more carefully when you decide to buy this tank decoration are the strange smell once you have unwrapped it and put it in the tank. This jewelry also seems to be more prone to fungal problems.

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10. Penn Plax Castle Aquarium Decoration Hand Painted

If you want to add something to your aquarium that really creates an underwater kingdom for your fish, take a look at this hand painted castle.

The great gray castle sits on a rocky hill above a flowing waterfall and offers its fish plenty of hiding places.

This castle has a conical roof, arches, and stone accents that make it look surprisingly realistic. It is a large decoration that measures more than 20 cm in height.

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11. Ships

Sunken ships can be purchased from most commercial retailers. If you want to create a natural, sea-like theme, sunken ships are a safe and fish-friendly option that complements most tank structures well.

The boats also offer excellent hiding places for fish, so types of prey can be hidden for safety and comfort.

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12. Penn-Plax Wizard’s Castle Aquarium Decoration

Have you stopped looking for realistic aquarium decorations? Well, there is no reason for you to frown when you look at the exciting design and features of these aquarium jewelry. It is large enough and can add a standout attraction to the aquarium.

As you can see, you can see that this decoration could promote visual interest for you and your pet fish. This could add a very exquisite piece of jewelry that you, your fish, and your guests would like to look at. If you want your fish to stay active and happy, this castle can help them combat boredom as they might have a place to play, move and swim.

In fact, you need to pay attention to the sharp edges found in the openings of this decoration and which need to be gently sanded, and there is a tendency for algae to accumulate in the upper tower of the castle. Therefore, a thorough and regular cleaning is essential.

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13. Sunyiny Aquarium Decorations Ornament

Here’s another great lock that’s perfect for any tank with a capacity of 5 gallons or more.

This double-sided design can be stored anywhere in your tank and is made of high-quality resin that can be used in salt or fresh water without worrying about color fading.

There are many places where your fish can hide and holes for you to swim. The weighted base keeps it upright where you put it.

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14. Ruins

The ancient ruins are a great addition to the Atlantis / Mermaid motif tanks and serve as perfect places where fish of prey can hide.

When adding ruins of any kind, make sure they are specially built or otherwise quarantined or safely decontaminated before use.

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15. NICREW Aquarium Volcano Ornament Kit

You might be wondering where to buy extra large aquarium decorations and whether they are the ideal option worth buying. This volcanic tank decoration is big enough, but it doesn’t make the aquarium look overloaded.

As soon as you have purchased the kit, it already consists of the airline hose, bubble maker with built-in LED light, power supply and decoration. This consists of harmless resin, which is not a danger to the inhabitants of your aquarium and the environment. It is undemanding to install and works fairly reliably to enhance the artistic appeal of the tank.

It is important to know the negative points associated with the decoration of this tank. These consist of its unreliable durability, as it can be easily damaged and the volcano works. You have to buy an air pump separately.

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16. SLOCME Aquarium Ornaments Resin Castle Decorations

The SLOCME resin lock is made of an environmentally friendly and non-toxic material that does not change the chemistry of the water in your aquarium. It is double-sided, so it can be placed anywhere on your tank in any direction.

You’ll love looking at the little bricks and stairs and the detailed green, and your fish will adore every hiding place and corner you can swim through. This is the perfect size for a 10 gallon tank.

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17. Statues

The human and animal statues look great in aquariums with a marine theme and serve as attractive decorative options that give a standard moor aquarium a creative and unique feel.

The statues can be purchased from many aquatic retailers. When buying larger figures make sure your tank doesn’t get too full and follow the design and style guidelines above.

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18. Miracliy Aquarium Decorations Castle

Sometimes it can take a long time to decide which freshwater or saltwater aquarium decor to choose, keeping in mind that there are countless options in both local and online stores. If you want to narrow down your options, you can find out what this tank decoration has to offer.

Once you have installed this decoration on your tank, your pet fish would open beautifully through the openings. It is designed for dynamic colors and the acrylic lock is made of robust acrylic material. The painting and details of this piece are out of this world. It could certainly make the aquarium look like a great sight that you would love.

Two major flaws that need to be thoroughly checked if you want to get this tank decoration are larger than expected and appear to be crooked as there is a small stain on the bottom of one edge of the decoration that was not completely solid. Before buying, be sure to check the dimensions of your tank.

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Aquarium Decorations Driftwood

19. GEOsystem Fluval Mopani Driftwood

Wood is one of the most natural decorations you can add to your aquarium, and this Mopani floating wood is an amazing choice.

The curves, knots and holes in this wood are fun and give your tank an interesting sculptural element.

This is a natural Mopani root that has been sandblasted to prevent water contamination. It can be used alone or as an anchor for live plants.

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20. Bubble Makers

Bubble boxes, underwater rivers, and air stones not only look attractive, but are often an essential addition to densely populated aquariums.

If you keep one or more highly active fish in a single tank, it is important that they have an adequate supply of oxygen.

Busy fish need more than slower species. Therefore, it is important that you keep oxygen levels high by adding decorations that produce air.

When installing bubble makers in your aquarium, make sure they are not too strong for your fish. If the water flow is too high, the fish will have a hard time swimming and despair, which often leads to disease.

A high flow of water can be compensated by adding dense objects such as floating wood.

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Aquarium Decorations Plants

21. CNZ Fish Tank Decoration Ornament Artificial Plastic Plant Green

The best aquarium decorations are those that look natural, even though they are artificial. Like this ornament, it looks like a real aquatic plant that you can’t even say is made of plastic. It is exciting to buy something good for a very reasonable price.

You will find that the decoration of this tank is a practical element, since it makes the aquarium look more alive and does not endanger the health of your fish. This does a great job when it comes to breaking lines of sight in a larger aquarium. Surprisingly, it would be confusing to determine if it is real due to its natural look and style or not.

The only things that give this tank decor some negative comments are its pale stem, which doesn’t mix well with the rest of the decor, and some leaves warp.

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22. Yizhi Miaow Aquarium Decorations Tree Log/Driftwood

If you prefer to avoid natural wood because you fear it will color the water, this resin float is an excellent alternative.

It has realistic looking artificial plants along the top and some fun nooks for your fish to explore.

The safe and non-toxic resin is ecological and does not change the chemistry of the water. It’s great in an aquarium, but it would also be a great addition to a reptile tank.

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23. Nature’s Ocean Coral Base Rocks for Aquarium

While it is obviously true that these cool aquarium decorations are overpriced, there is no denying that they offer absolute value for money. You could help make the tank look like a natural, oceanic environment that your pet fish will thank you for.

In addition to aquariums, these products are great for many different purposes as they can also be used to grow live corals, develop live stones, and the perfect choice for growing corals. They are also of the highest quality in terms of habitat and have no negative effect on your tank cycle. Note that they must be soaked in deep water to effectively prevent leaks.

These coral beds need to be rinsed desperately as they are laden with sand and dust that must be removed completely to avoid problems once added to the reefs. And it’s expensive, which could surely hurt your budget. These are some of the minor problems that should be considered before making a final purchase decision.

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24. Bonsai Driftwood Aquarium Tree

This floating bonsai wood tree is made from natural wood that has been transformed into a beautiful work of art. This wood is safe for fish and shrimp and nice when mixed with stones, moss, and air plants.

Since this wood contains natural tannic acid, it conditions the water and can lower the pH of your tank.

For best results, the wood should be boiled for 20 minutes to sterilize it before adding it to the tank.

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Aquarium Decorations Caves

Aquarium Decorations Wood


25. Hygger Betta Log Resin Hollow Tree Trunk Ornament

Whether decorating saltwater or freshwater aquariums, this tank decor is a good option so you don’t waste your hard-earned money. This is one of the best picks for small and medium aquariums that need adorable decorations to entertain various species of fish that live in them.

If you look at this log, you will find that there are holes big enough for your pet fish to pass through. You’ll love the view when your water lover explores and enjoys the new cave. When you add this to your tank, you will be amazed at the transformation of the aquarium.

Two factors to consider are the various rough spots on the inside and outside of the tree trunk. The inner part of the tree trunk has very sharp edges and bumps that must be sanded to smooth them out.

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How to choose decorations for an aquarium?

The good news is that there is no right or wrong way to decorate an aquarium. As long as you use high-quality materials that won’t change the water or harm your fish, anything is possible.

When choosing decorations, you must first decide how the overall image should look, and this can actually be very difficult because there are so many options.

Here are some things to think about when deciding which direction to go.

Natural vs Not Natural

The first thing to decide is whether you want a purely natural theme or something fantastic and fun.

What do you like more, driftwood and rocks or magnificent castles and plants that glow in the dark?

Of course, there are no strict rules for decorating aquariums, so you can mix everything if you want. However, choosing whether to stick with a natural underwater scene or create something completely different is a good place to start.

Color scheme

There are two ways of thinking about color.

First, ask yourself if you want to follow a color scheme. Do you prefer a natural interior with lots of browns and greens? Or would you also like to add some bright colors?

Then ask yourself what kind of fish you will keep in the aquarium. If you have a lot of bright and colorful fish, the best way to highlight them is to use a white substrate with natural green plants. If your fish are lighter in color, a dark substrate and dark decorations can really help them stand out.


Live plants in your aquarium have many advantages, but artificial plants are much easier. There is no maintenance at all and some of them look so realistic that you can’t tell the difference.

If you choose live plants, there are many great natural decorations that can help them take root and establish themselves effectively. Adding driftwood can really help.

Design or how to make it look good

You can honestly set up your tank the way you want, but there are some design rules that need to be followed to get a more natural look.

First, choose a primary focus. It is a good idea to choose something with some holes or corners and angles to give the fish a place to hide and play.

Next, consider the height of your decorations. So think about it. Different types of fish prefer different parts of the tank. They have the best swimmers, the bottom residents and those who hang out somewhere in between.

Aquarium owners often spend a lot of time placing plants, stones, wood, or castles at the bottom of the tank, but don’t think much about height.

You must decorate the three areas where the fish like to walk. This may mean that some tall plants reach the top of the tank or a large piece of floating wood that covers the tank from the bottom up. Just be sure to add some height.

Another thing to consider is how many decorations to include. You don’t want to go overboard because your fish still need room to swim. However, the tank should not look too tight.

A good rule of thumb is to fill about 50% of the tank with decoration to ensure there is still ample room for fish to swim. Spread things out in even groups so there is a place for fish who like open spaces and areas where shy fish can hide when they need it.



When it comes to decorating your aquarium, there are no right or wrong answers. As long as you use quality products that do not adversely affect water, you can choose any decoration.

In a way, make the decision to do what you want more difficult. Take a look at the decorations we recommend and make suggestions on how to choose the one that’s right for you. Both you and your fish are the way to a happy and beautiful aquarium.