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What are Different Types of Aquarium Sculputures?

R. Kayne
R. Kayne

Most aquarium sculpture is made from nontoxic plastic that has been molded into interesting shapes of natural or whimsical design. Though some aquarium sculpture may look nice on the webpage or sitting on the shelf, each piece should be considered in context of the environment of your specific tank and the needs of its residents. Carefully selected aquarium sculpture is not only a decoration, but functional, like furniture in a home.

If some fishes in your tank require a good amount of free swimming space, such as bala sharks, opt for aquarium sculpture that does not extend into the mid and upper levels of the tank where the balas swim. The exception is if your tank is so large that the aquarium sculpture occupies insignificant space, as in the case of a 150-gallon (568-liter) tank.

Carefully selected aquarium sculpture is not only a decoration, but functional, like furniture in a home.
Carefully selected aquarium sculpture is not only a decoration, but functional, like furniture in a home.

When considering swimming space, bear in mind that most people underestimate the needs of larger fish. A 60-gallon (227-liter) tank is not a large tank for occupants larger than four inches (10 centimeters). It is a myth that a small tank will keep fish small. It will only cause them to grow more slowly and to endure more stress, making them more susceptible to disease.

Aquariums that are too small or crowded can cause stress to the fish they hold.
Aquariums that are too small or crowded can cause stress to the fish they hold.

Some aquarium sculpture is made with a large hole in the center so that fishes can pass through without having to maneuver inside the decoration. If the decoration must extend into the swimming space, this can be a compromise for top-swimming fish. Another choice is a whimsical decoration, such as a treasure tank with cascading bubbles - an apt decoration for “circling sharks” above!

Bala sharks can grow to 16 inches in length.
Bala sharks can grow to 16 inches in length.

Tiny fish like neon tetras enjoy swimming in and out of aquarium sculpture, so choosing something hollow with passages throughout will make the fish feel safe. This is even more critical if there are larger tankmates present. In this, case you might provide a sculpture in the form of a castle or lava formation with passages too small for the larger fish, so that the neons can enter the aquarium sculpture for refuge. In the wild, plants provide natural refuge for small fish and reduce stress. Aquarium sculpture surrounded by live plants adds authenticity to the decoration and makes for happy fishes.

The coral beauty angelfish makes an excellent aquarium fish.
The coral beauty angelfish makes an excellent aquarium fish.

Catfish love exploring the bottom of the tank, so aquarium sculpture such as hollowed logs are especially nice for this type of fish. Note that the holes in the decoration should have plenty of room for the fish to pass through when fully grown. Growing fish often get stuck in holes they could once pass through. A typical pattern is that a lodged fish will struggle until it injures its gills and exhausts itself, then dies – all while the aquarium owner is sleeping or at work. This is easy enough to avoid by choosing the right aquarium sculpture for your little wet pals.

Often, aquarium sculpture is placed next to terrarium sculptures in pet centers. Though they may look similar, do not place anything in an aquarium that was not made as an aquarium decoration. Plastics and paints can leach harmful chemicals into the water that will kill your fish, so purchase only genuine aquarium sculpture.

Note that ceramic or plaster aquarium sculpture can leach calcium, which raises pH values and adds hardness to the water. This may not be a concern for hard water fishes such as cichlids, but it is not desirable for soft water fishes such as neon tetras, angelfish, and gouramis. Plastic aquarium sculpture is desirable because it does not change water values.

By considering the size of your tank, its aesthetic environment, and the needs of the fish, you should be able to come up with excellent choices for aquarium sculpture. The right decorations will improve the beauty of your tank while providing safety, entertainment, and in some cases, added oxygen to the fish. Remember to rinse new decorations off before introducing them into the aquarium. If they are hollow, spill out all trapped tap water before placing them in the tank. Also, vacuum under and around aquarium sculptures when cleaning.

Frequently Asked Questions

What are the most popular materials used for aquarium sculptures?

Popular materials for aquarium sculptures include non-toxic resins, ceramics, and natural rocks. Resin sculptures are favored for their versatility and durability underwater. Ceramics offer a classic look and can be beneficial for beneficial bacteria colonization. Natural rocks, like lava or dragon stone, provide a more organic aesthetic and can help maintain water quality.

Can aquarium sculptures affect the water quality in my tank?

Yes, aquarium sculptures can affect water quality. Non-toxic resin and ceramic sculptures are generally safe and inert, meaning they won't alter water parameters. However, certain rocks, like limestone, can raise the pH and hardness of the water. It's crucial to choose sculptures that are compatible with the specific needs of your aquatic inhabitants.

How do I choose the right size and shape of sculpture for my aquarium?

Choosing the right size and shape of sculpture for your aquarium depends on tank size and the species you keep. Provide ample space for fish to swim and avoid sharp edges that could harm them. In smaller tanks, opt for less bulky sculptures to prevent overcrowding. For larger tanks, bigger, more intricate pieces can create a stunning focal point.

Are there any benefits to having sculptures in an aquarium besides aesthetics?

Apart from aesthetics, aquarium sculptures can provide shelter and hiding spots for fish, which is essential for their well-being. They can also serve as a substrate for beneficial bacteria, aiding in biological filtration. Additionally, sculptures can help break up lines of sight, reducing aggression among territorial fish by providing separate territories within the tank.

How do I maintain and clean aquarium sculptures?

Maintaining and cleaning aquarium sculptures involves regular inspection for algae growth and debris. Gentle scrubbing with a soft brush can remove buildup. For tougher algae, soaking the sculpture in a diluted bleach solution (10% bleach to 90% water) followed by thorough rinsing and dechlorination before reintroduction to the tank can be effective. Always avoid harsh chemicals that can harm aquatic life.

Can I create a themed aquarium using sculptures?

Creating a themed aquarium using sculptures is a popular way to personalize your aquatic environment. Themes like sunken ships, ancient ruins, or fantasy landscapes can be achieved with carefully selected sculptures. When planning your theme, ensure all elements are safe for your tank's inhabitants and consider how the sculptures will interact with plants and other decorations.

Discussion Comments

KoiwiGal

@clintflint - Honestly, I don't really trust any kind of cheap sculpture in a tank. People think they can dump any sort of rock or stick in there and don't realize how much bacteria and other nasty things they might be introducing into the water, particularly if the object comes from anywhere near a pond or the ocean.

Then there are all the chemicals that might be on everyday objects. And even sculptures from a pet store might not be ideal. They aren't exactly tested for safety. Unless it's a reputable brand I wouldn't use one and even if it is, I'd clean it very thoroughly before putting it in the water.

clintflint

@Fa5t3r - It might not have been the sculpture. It might just have been that when the fish felt sick they swam into it in order to stay hidden from predators and so that's where they always died. It's surprisingly difficult to set up a tank well so that the fish will thrive and people tend to take goldfish care for granted which leads to even more problems. If it was a sculpture made specifically for goldfish I doubt it was the real problem and taking it out was only a coincidence.

Fa5t3r

I don't know what the problem was, but for some reason the sculpture that came with my nephew's goldfish tank setup seemed to kill his poor fish. We went through a couple of pairs and they were always found dead inside the sculpture (which, fittingly enough, I suppose was a hollow skull shape).

After we took the sculpture out, the next pair lived and are still living. So I'd be cautious about putting in an aquarium sculpture. I don't know if it was a chemical on it or that the fish got stuck or what, but it seemed to be doing something.

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    • Carefully selected aquarium sculpture is not only a decoration, but functional, like furniture in a home.
      By: Arkady Chubykin
      Carefully selected aquarium sculpture is not only a decoration, but functional, like furniture in a home.
    • Aquariums that are too small or crowded can cause stress to the fish they hold.
      By: Michal Adamczyk
      Aquariums that are too small or crowded can cause stress to the fish they hold.
    • Bala sharks can grow to 16 inches in length.
      By: Andrey Armyagov
      Bala sharks can grow to 16 inches in length.
    • The coral beauty angelfish makes an excellent aquarium fish.
      The coral beauty angelfish makes an excellent aquarium fish.