Fish That Can Live With Clownfish – The Ultimate Compatibility Guide
Most of us entered the saltwater hobby because we fell in love with the iconic orange and white stripes of the Amphiprion ocellaris. It is hard to resist their “waddling” swim style and their fascinating relationship with anemones.
However, as any experienced aquarist will tell you, a clownfish isn’t just a pretty face; they are members of the damselfish family and can be surprisingly feisty. Finding the right fish that can live with clownfish is the difference between a peaceful reef and an underwater battlefield.
In this guide, we are going to dive deep into the best tank mates for your clowns, ranging from colorful gobies to majestic tangs. By the end of this article, you will have a clear blueprint for a thriving, harmonious community aquarium.
Understanding Clownfish Temperament and Territory
Before we list specific species, we need to understand the psychology of the clownfish. Not all clowns are created equal when it comes to social behavior and aggression.
The most common species, like the Ocellaris and Percula, are generally peaceful but will defend their “host” area vigorously. If they have an anemone, they consider that spot their sovereign territory.
On the other end of the spectrum, species like the Maroon Clownfish or Tomato Clownfish are notorious “bruisers.” They grow larger and are far more aggressive toward newcomers.
When selecting fish that can live with clownfish, you must match the aggression level of your specific clownfish species. If you have a peaceful Ocellaris, you want peaceful tank mates; if you have a Maroon, you need robust companions.
The Social Structure of Clowns
Clownfish are protandrous hermaphrodites, meaning they are all born male and the largest, most dominant individual in a group turns female. This biological quirk influences how they interact with other fish.
A established pair of clownfish will often “tag team” any intruder that gets too close to their nesting site. Choosing tank mates that occupy different levels of the water column is a pro-level strategy to avoid these conflicts.
Top 10 fish that can live with clownfish peacefully
Let’s get into the specifics. Here are our top picks for compatible tank mates that offer beauty, utility, and peaceful temperaments.
1. Blennies (The Personality Kings)
Blennies are fantastic additions because they spend most of their time perching on rocks or hiding in crevices. This keeps them out of the mid-water territory where clownfish usually hover.
The Lawnmower Blenny is a personal favorite at Aquifarm. Not only is it peaceful, but it also works tirelessly to keep your live rock free of nuisance hair algae.
The Midas Blenny is another stunning choice. Its golden hue provides a beautiful contrast to the orange of the clownfish, and its eel-like swimming motion is a joy to watch.
2. Gobies and Pistol Shrimp Pairs
If you want to witness one of nature’s coolest partnerships, look no further than the Watchman Goby and its symbiotic Pistol Shrimp buddy. They live in a burrow together and rarely bother anyone.
Because gobies are bottom-dwellers, they almost never cross paths with a territorial clownfish. This makes them some of the safest fish that can live with clownfish in smaller nano tanks.
The Firefish Goby is another excellent option. These slender fish are incredibly colorful and tend to hover just above the sand, darting back into their holes if they feel threatened.
3. Royal Gramma Basslet
The Royal Gramma is a staple in the reef hobby for a reason. Its vibrant purple and yellow coloration is unmatched, and it is a relatively hardy species for beginners.
While they can be slightly territorial over their favorite cave, they generally ignore clownfish entirely. Just ensure your aquascape has plenty of “nooks and crannies” for everyone to claim a spot.
4. Banggai and Pajama Cardinalfish
Cardinalfish are the “slow and steady” members of the reef. They are mouth-brooders and tend to hang out in the water column without moving much, almost like floating ornaments.
Because they are so docile, they make wonderful companions. The Banggai Cardinalfish has a striking silver and black striped pattern that looks elegant alongside the bright colors of a clownfish pair.
5. Damselfish (With Caution)
Wait, aren’t damsels aggressive? Yes, many are. However, certain species like the Azure Damselfish or the Yellowtail Blue Damselfish are manageable in larger tanks.
Since they are closely related to clownfish, they have similar care requirements. Just be sure to introduce the clownfish first so they can establish their territory before the damsels arrive.
6. Six-Line Wrasse
The Six-Line Wrasse is a powerhouse of activity. It is constantly hunting for small pests like flatworms and pyramidellid snails, making it a “utility fish” for your reef.
They are fast and bold enough to hold their own if a clownfish gets a bit nippy. However, in very small tanks, they can become the aggressors, so we recommend them for tanks 30 gallons or larger.
7. Dartfish (Zebra or Scissortail)
Dartfish are peaceful, schooling fish that add a lot of movement to the upper layers of the aquarium. They are very fast and can easily evade a grumpy clownfish.
They are best kept in small groups. Seeing a trio of Zebra Dartfish hovering together provides a sense of scale and natural beauty to your display.
8. Tangs (For Large Aquariums)
If you have a tank that is 75 gallons or larger, Tangs are spectacular tank mates. The Yellow Tang or Kole Tang are great choices for herbivorous roommates.
Tangs occupy a much larger swimming space than clownfish. While a clownfish might stay within a 12-inch radius of its home, a Tang will utilize the entire length of the tank, minimizing interactions.
9. Chromis
The Blue Green Chromis is a peaceful, schooling fish that is incredibly hardy. They are often used as “dither fish” to help more timid species feel comfortable coming out into the open.
Because they stay in the upper water column and move in groups, they are rarely targeted by clownfish. They add a shimmering, metallic look to the tank that complements any reef setup.
10. Dwarf Angelfish
The Coral Beauty or Flame Angelfish are stunning additions. They are active swimmers and spend their days picking at algae on the rocks.
While they can be semi-aggressive, they are usually too busy exploring the rockwork to bother a pair of clownfish. Just be aware that some dwarf angels may occasionally nip at corals.
Choosing Tank Mates Based on Your Aquarium Size
Space is the ultimate peacekeeper in the saltwater hobby. Even the best fish that can live with clownfish will fight if they are cramped in a box that is too small.
The Nano Tank (10–20 Gallons)
In a small setup, you are limited. A single pair of Ocellaris clownfish will claim almost the entire tank. In this scenario, stick to bottom-dwellers like Neon Gobies or Tailspot Blennies.
Avoid active swimmers like Wrasses or any type of Tang in these small volumes. The goal here is to minimize “visual competition” in the mid-water area.
The Medium Tank (30–55 Gallons)
This is the “sweet spot” for many hobbyists. Here, you can successfully house a pair of clowns along with a Royal Gramma, a Six-Line Wrasse, and perhaps a small school of Chromis.
At this size, you have enough rockwork to create distinct territories. You can have a “Clownfish Corner” and a “Gramma Cave” on opposite sides of the tank.
The Large Tank (75+ Gallons)
The world is your oyster! In large tanks, you can keep the more aggressive Maroon Clownfish with larger companions like Foxfaces, Tangs, and even Marine Betta.
Large volumes of water dilute aggression and allow for a much higher biodiversity. You can truly recreate a slice of the reef with various species occupying every niche.
Important Compatibility Considerations: Aggression and Anemones
It is a common myth that clownfish need an anemone to survive. In reality, they do perfectly fine without one. However, adding an anemone changes the social dynamics of the tank.
When a clownfish hosts an anemone, its protective instincts go into overdrive. It will see almost any other fish as a potential threat to its “baby.”
If you plan on keeping an anemone, choose fish that can live with clownfish that are smart enough to stay away. Most fish naturally avoid the stinging tentacles of a Bubble Tip Anemone, but curious species might get a nasty zap.
The “Newcomer” Rule
A pro tip for reducing aggression: Introduce your clownfish last. If the other fish have already established their territories, the clownfish will be the “new kids on the block” and will be less likely to claim the entire tank as their own.
If you already have clownfish and want to add new friends, try rearranging the rockwork slightly. This “resets” the boundaries and forces everyone to find a new home at the same time.
Non-Fish Tank Mates: Shrimp, Snails, and Crabs
A healthy aquarium isn’t just about the fish. Invertebrates play a massive role in the ecosystem and are generally excellent companions for clownfish.
Cleaner Shrimp
Skunk Cleaner Shrimp are iconic. They set up “cleaning stations” where fish will actually line up to have parasites and dead skin removed. Clownfish often participate in this behavior, making it a peaceful and functional relationship.
Peppermint Shrimp
If you have an issue with Aiptasia (nuisance anemones), Peppermint Shrimp are your best friends. They are nocturnal and stay out of the way of your clownfish during the day.
The Clean-Up Crew (CUC)
Snails (like Astraea or Nassarius) and Hermit Crabs (like Scarlet Reef Hermits) are essential. They don’t interact with the fish at all, but they keep the environment clean, which reduces stress for everyone involved.
Frequently Asked Questions (FAQ)
Can clownfish live with Bettas?
Absolutely not. Bettas are freshwater fish, and clownfish are saltwater fish. They cannot survive in the same water parameters. Never attempt to mix fresh and saltwater species.
Can I keep two different types of clownfish together?
We generally advise against this, especially for beginners. Mixing a Maroon Clown with an Ocellaris usually ends in disaster. Stick to a mated pair of the same species for the best results.
What is the best fish to live with a single clownfish?
A Blenny or a Royal Gramma is an excellent choice for a single clownfish. They occupy different areas of the tank and have very different diets, reducing competition.
Do clownfish eat shrimp?
Generally, no. Most clownfish ignore ornamental shrimp like Cleaners or Fire Shrimp. However, very large Maroon clowns might occasionally pick at very small ornamental shrimp if they aren’t well-fed.
How many fish can I put in a 20-gallon tank with two clownfish?
In a 20-gallon tank, we recommend no more than 1 or 2 additional small fish (like a Goby or a Blenny) alongside your pair of clowns. Overstocking leads to nitrate spikes and increased aggression.
Conclusion: Success with Your Reef Community
Creating a beautiful marine masterpiece is one of the most rewarding experiences in the aquarium hobby. By carefully selecting fish that can live with clownfish, you are ensuring the long-term health and happiness of your aquatic pets.
Remember, the “Golden Rule” of reef keeping is research before you buy. Always check the adult size, temperament, and dietary needs of any new addition. Don’t worry—this setup is perfect for beginners if you take it slow and follow the guidelines we’ve discussed!
Whether you choose the comical antics of a Blenny or the peaceful elegance of a Cardinalfish, your clownfish will appreciate the company. Happy reefing, and may your tank always be clear and your fish always be vibrant!
For more expert advice on saltwater setups, shrimp keeping, and aquatic plants, keep exploring Aquifarm—your go-to resource for a thriving aquarium.
