Mantis Shrimp Fish Tank – How To Build The Perfect Habitat
Have you ever wanted to keep a creature that possesses the fastest punch in the animal kingdom and can see a spectrum of colors invisible to humans?
Keeping a mantis shrimp fish tank is one of the most rewarding challenges a marine aquarist can take on, offering a glimpse into the life of a truly intelligent predator.
If you are worried about the “aquarium-shattering” myths or finding the right species, don’t worry—this setup is actually perfect for beginners who want something unique!
In this guide, I will walk you through every step of the process, from selecting the right Stomatopod species to ensuring your glass stays in one piece.
We are going to cover tank materials, specialized filtration, and the specific dietary needs that will keep your mantis shrimp vibrant and healthy for years to come.
Understanding the Stomatopod: More Than Just a Shrimp
Before we dive into the technical specs of your mantis shrimp fish tank, we need to understand what these animals actually are.
Despite their common name, mantis shrimp are not actually shrimp; they are Stomatopods, a distinct lineage of crustaceans that branched off millions of years ago.
They are famous for their complex eyes and their specialized raptorial appendages, which they use to hunt with incredible speed and precision.
In the hobby, we generally categorize them into two groups based on their hunting style: smashers and spearers.
Smashers use a club-like appendage to crack open snails and crabs, while spearers use barbed “spears” to snatch fast-moving fish from the water column.
Knowing which type you want is the first step in designing a successful habitat, as their environmental needs differ slightly.
Choosing the Right Mantis Shrimp Fish Tank: Glass vs. Acrylic
One of the first questions I always get from fellow hobbyists is: “Will it really break the glass?”
The short answer is: rarely, but it is a possibility with very large species like the Peacock Mantis Shrimp (Odontodactylus scyllarus).
Because of this, many keepers prefer using an acrylic aquarium rather than a traditional glass one.
Acrylic is much more impact-resistant and can absorb the shock of a “strike” if the shrimp sees its reflection or gets grumpy at the wall.
If you do choose a glass mantis shrimp fish tank, make sure it is made of thick, high-quality tempered glass.
For smaller species like Neogonodactylus wennerae, a standard glass tank is perfectly fine and highly unlikely to suffer any damage.
However, for peace of mind with larger smashers, placing a thin sheet of acrylic or PVC on the bottom of the tank before adding substrate is a smart move.
This protects the bottom pane from a downward strike if the shrimp decides to dig a burrow all the way to the glass.
Smashers vs. Spearers: Selecting Your Species
Choosing your inhabitant is the most exciting part of the journey, but you must match the species to your experience level.
The Peacock Mantis (The Smasher King)
The Peacock Mantis is the “poster child” of the hobby due to its incredible neon green, red, and blue coloration.
They are large, active, and require a mantis shrimp fish tank of at least 20 to 40 gallons to thrive.
They are highly intelligent and will often “watch” you through the glass, making them feel more like a pet than a simple crustacean.
The Wennerae Mantis (The Beginner Favorite)
If you are just starting out, I highly recommend Neogonodactylus wennerae.
These are smaller, hardy, and usually come as “hitchhikers” on live rock from the Caribbean.
They stay around 2-3 inches, meaning you can house them comfortably in a 10-gallon nano setup.
The Spearers (The Ambush Predators)
Spearers, like the Lysiosquillina maculata, require a much deeper sand bed because they are vertical burrowers.
They spend most of their time buried with only their eyes poking out, waiting for a fish to swim by.
These require a specialized setup with a very deep substrate, often 1.5 times the length of the shrimp’s body.
Essential Equipment and Water Parameters
Maintaining stable water chemistry is vital, as mantis shrimp are sensitive to sudden changes, especially during the molting process.
Your mantis shrimp fish tank should be treated like a reef tank, even if you don’t plan on keeping corals.
Filtration and Flow
Mantis shrimp are messy eaters, often leaving bits of shell and meat scattered around their burrows.
You will need a strong protein skimmer or a high-quality canister filter to handle the biological load.
Moderate water flow is ideal; you want enough to prevent dead spots, but not so much that it disrupts their digging.
Lighting Requirements
Interestingly, many mantis shrimp species are prone to shell disease if the lighting is too intense.
In the wild, many live in deeper water or inside dark burrows, so dimmer, ambient lighting is usually better.
If you want to keep corals, stick to low-light species like mushrooms or zoanthids that won’t require high-PAR LED arrays.
Ideal Water Parameters
- Salinity: 1.024 – 1.026 (Stability is key).
- Temperature: 74°F to 78°F.
- Nitrates: Below 10ppm (High nitrates can interfere with molting).
- Iodine: Maintaining proper iodine levels is crucial for a successful molt.
Landscaping Your Mantis Shrimp Fish Tank
The “aquascape” of your tank isn’t just about aesthetics; it is about providing the security your shrimp needs to feel at home.
Substrate Choice
For smashers, a mix of crushed coral and sand is best, as it allows them to reinforce their burrows with larger chunks.
For spearers, a fine oolitic sand is necessary so they can slide in and out of their vertical tunnels without injury.
Rockwork and Burrows
Mantis shrimp are architects; they will spend hours moving rocks and “redecorating” their space.
Provide plenty of live rock with natural crevices, or better yet, a pre-made PVC pipe burrow.
Burying a 1-inch to 2-inch diameter PVC pipe under the rockwork gives them a safe “bolt hole” right away.
This reduces their stress significantly when they are first introduced to the aquarium.
Diet, Feeding, and Enrichment
Feeding time is when you truly get to see the power of the mantis shrimp in action.
For smashers, you should provide a diet of hard-shelled prey to keep their dactyl clubs in good condition.
Frozen krill, silversides, and chunks of squid are great staples, but they need “live” enrichment too.
I recommend adding hermit crabs or snails to the tank once a week.
Watching the shrimp hunt and “smash” these shells is a fascinating display of their natural behavior.
Using a pair of feeding tongs is highly encouraged—never feed a mantis shrimp with your bare hands!
They are incredibly fast, and a “thumb-splitter” strike can result in a trip to the emergency room for stitches.
The Molting Process: A Critical Time
Every few months, your mantis shrimp will undergo a molt, shedding its old exoskeleton to grow larger.
This is the most dangerous time in a stomatopod’s life.
A few days before molting, your shrimp will likely seal itself inside its burrow with rocks and sand.
Do not disturb them! They are incredibly soft and vulnerable during this period.
It may take a week or more for their new shell to harden, and they will not eat during this time.
Ensure your water parameters are perfect and that there is plenty of calcium and magnesium in the water to help the new shell form.
Safety and Maintenance for the Aquarist
While keeping a mantis shrimp fish tank is safe if you are careful, there are a few “pro-tips” you should follow.
Firstly, always be aware of where the shrimp is when you are cleaning the glass or moving rocks.
If you need to move the shrimp, use a thick plastic container rather than a net, as their spines can get tangled in the mesh.
Regular 10-20% weekly water changes are the best way to keep the environment pristine.
Because they are solitary predators, most mantis shrimp should be kept in a species-only tank.
Fish and other invertebrates will almost certainly become expensive snacks sooner or later.
FAQ: Common Questions About Mantis Shrimp
Can I keep a mantis shrimp with any fish?
Generally, no. Small fish will be eaten by spearers, and slow-moving or bottom-dwelling fish will be bullied or killed by smashers. Some keepers have success with very fast, top-dwelling fish like Damselfish, but it is always a risk.
How long do they live?
With proper care, many species can live between 3 to 7 years, while some of the larger species have been known to live even longer in captivity.
Do I need a lid on my tank?
Yes! Mantis shrimp are surprisingly good climbers and can jump out of the tank if they are spooked or exploring. A tight-fitting lid is a must.
Why is my mantis shrimp losing its color?
This is often due to lighting that is too bright or a lack of variety in their diet. Try offering high-quality frozen foods soaked in vitamin supplements and reducing the photoperiod.
Is a mantis shrimp tank hard to maintain?
Not at all! In many ways, they are easier than a full reef tank because they are very hardy. The main focus is simply keeping the water clean and the shrimp fed.
Conclusion
Building a mantis shrimp fish tank is an incredible way to experience one of the ocean’s most intelligent and charismatic inhabitants.
By choosing the right tank material, providing a secure burrow, and maintaining stable water chemistry, you can enjoy the fascinating antics of these “armored warriors.”
Whether you choose the vibrant Peacock Mantis or a small, spunky Wennerae, you are in for a hobby experience unlike any other.
Remember, the key to success is patience—especially during the molting phase—and a healthy respect for their powerful “punch.”
Ready to start your stomatopod journey? Head over to the Aquifarm forums to share your setup and ask our community of experts any questions you have!
