10 Best Fish For 1-gallon Tanks [2025]
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Finding the best fish for 1-gallon tanks can be a daunting task, as the limited space requires careful consideration of compatible species and their specific needs. With countless options available, choosing the right fish on your own can lead to confusion and frustration. To simplify your selection process, we have meticulously shortlisted 10 products that are ideal for small aquariums, ensuring you can quickly identify the best fit for your tank. Our curated list not only saves you time but also alleviates the hassle of navigating through overwhelming choices.
Top 10 Fish For 1-gallon Tanks In The Market
Fish For 1-gallon Tanks Review
- AQUARIUM KIT: Clear plastic, half moon-shaped front allows unobstructed viewing.
- MOVABLE LIGHT: LED light can be positioned to light tank from above or below – requires 3 AA batteries (not included).
- IDEAL FOR BETTAS: Bettas have large, heavy fins that weigh them down, so they do not need a lot of space; bettas require minimal maintenance and make a great species for beginners.
- CONVENIENT: Clear canopy has a hole to make feeding fish easy.
- 1.1 GALLON TANK: Small size that’s perfect for a desktop or in any room (9 inches x 10.5 inches x 4.5 inches).
- Aquarium KIT Hexagon-shaped aquarium kit is perfect for betta fish
- COLORFUL Bubbling disc automatically cycles through a rainbow of LED light colors
- INCLUDES FILTER Includes air pump-driven Tetra Whisper Internal Power Filter to keep your tank clean and provide a healthy environment for pet fish
- AIR PUMP Drives both the bubbling disc and the filter
- CONVENIENT Clear canopy has a hole for easy feeding
- 1.5 Gallon Nano Glass Fish Tank, We recommend this tank for aquascape hobby begginner. Experience fun while saving budget. It is also good tank for small fish.
- Tank Size: L: 6.29 x W: 6.29 x H: 8.66 inches.
- Glass Thickness: 4.2mm
- 3W hang on back filter, adjustable water flow
- 3W COB LED light
- Equipped with SmartClean(TM) Technology to perform water changes in less than 2 minute
- Improve water quality for a happy, healthy fish
- Includes aquarium vessel, hood and elevated base, power filter, small filter cartridge, fish food, water conditioner and setup guide
- Great home for small fish
- For first time and experience fish keepers of all ages
- 【DaToo 1.6 Gallon Fish Tank】: Do you want to create your own little aquarium world? The DaToo 1.6 Gallon Fish Tank is the perfect choice for you to explore the world of aquariums! It not only allows us to immerse ourselves in nature, but also relieves the stress of life and makes us happy both physically and mentally. This DaToo aquarium is carefully crafted to provide you with everything you need to start this amazing aquarium journey full of surprises and fun at the touch of a button!
- 【Ultra-clear Visual Experience】: The meticulously crafted DaToo Fish Tank is made of highly transparent and smooth Ultra HD GGPS plastic to experience 360° Ultra HD immersive viewing, which is lightweight, solid and safe, with excellent strength and abrasion resistance. With a light transmission rate of 91.5%, it is 1.5 times clearer than ordinary plastic. You can't even feel the wall of the aquarium, the fish feel like they are swimming in the air, it's amazing!
- 【Perfect Lighting System】: DaToo 1.6 Gal Aquarium Starter Kit prepares you with a lighting system consisting of 12 high brightness 3528 LED beads that mimic natural light, providing plenty of soft light for the fish tank. And it's waterproof and non-strobe to keep fish and other aquatic creatures comfortable and help create a natural ecological environment. Simply flick the switch on the top of the tank and immediately create a beautiful, healthy and safe underwater world for you.
- 【Powerful Quadruple Filtration】: The DaToo aquarium filtration system provides you with a quadruple filtration effect of 1*Biological, 2*Physical and 1*Chemical filtration, which easily cultivates beneficial small organisms, ensures clear and healthy water, and reduces the frequency of water changes. The internal 3W 80GPH water pump easily drives the water to self-circulate and runs at less than 35 decibels, creating a soothing atmosphere and visual waterfall experience.
- 【Thoughtful Details Design & Quality After-sales】: Flip top feeding port and removable top cover make feeding and cleaning more convenient, the fish tank is small and cute, won't take up too much space for you. Easy to install and durable. Beautifully boxed for you, perfect gift for your family, kids and friends. If you have any questions, please feel free to contact DaToo, customer satisfaction is our constant pursuit.
- Easy Setup: The Marina Cubus Betta Kit contains everything you need to keep bettas in a comfortable and attractive setting. The elegant glass aquarium brings a stylish decorative element to homes or offices.
- Bright and Vibrant: The aquarium comes with a flexible, energy-efficient clip-on light with 3 powerful LED lights that vividly enhance betta colors.
- Quick Access: The cover has an opening for breathing and easy access to fish, with the pedestal base protecting surfaces from damages.
- Volume: 0.9 U.S. gallon (3.4 L) aquarium.
- Dimensions: 5.9” x 5.9” x 5.9” (15 x 15 x 15 cm).
- AQUARIUM KIT: aquarium, filtration box, USB inverter pump, 2 pieces of filter cotton, 300g hollow quartz ball filter media, 250g aquarium decorative onyx stones; Please note: Plants and fish are not included; Aquarium size: 8.7 x 4.7 x 8.3 inches. Aquarium capacity is about 1 gallon (aquarium is about 0.8 gallon, filter box is about 0.2 gallon); With this aquarium starter kit, you can simply add your favorite fish. This is the best choice for beginners and children to enter the world of aquarium to cultivate love, relieve stress, decorate indoor space and bring good luck.
- SAFE AND RELIABLE: This desktop aquarium is made of highly transparent acrylic material with high light transmission rate. The main body of the aquarium is molded in one piece, anti-drop and wear-resistant, not easy to leak and won't burst the tank. Independent filtration compartment with adjustable flow rate mute water pump provides double filtration, oxygenation and removes oil film from the water surface. The bottom suction pump effectively adsorbs harmful substances and realizes the self-cleaning of the fish tank, creating a cleaner living environment for the fish.
- EASY TO MAINTAIN: This Betta Fish Tank is delicately designed with a large opening design, upper and lower tiers, easy and quick to clean, allowing you to enjoy a peaceful fish-watching time after a busy day at work.
- MULTIPURPOSE AQUARIUM: This aquarium with filter is suitable for keeping small fish and creatures that do not require much space, including betta fish, zebra fish, goldfish, hermit crabs, devil crabs, miniature freshwater shrimp (such as cherry shrimp), African dwarf frogs, apple snails and small fish. Please note that overstocking should be avoided and regular water changes should be done to keep the water clean.
- SPECIAL GIFT: For children, having a small aquarium can be a fun and rewarding experience. Aquariums help foster a sense of responsibility and love for nature, the environment and other forms of life. Small aquariums provide plenty of topics and experiences for parent-child interaction. For adults, this goldfish aquarium starter kit not only decorates the interior space but also helps to relieve stress and improve mood.
- 【5 in 1 Multifunctional】New aquarium starter kit, integrating water pump, filtration, LED lighting, air purification, and aromatherapy function into one. 1.8 gallon fish tank, very suitable for small fish and aquatic plants. Small and exquisite appearance, can be perfectly adapted to many places, such as living room, kitchen, bedroom, office, etc.
- 【Adjustable 9-Color LED Lighting】Built-in energy-saving dazzling LED light board, able to switch between 9 different light colors: White/Blue&White/Red/Blue/Green/3-Color Marquee 1/3-Color Marquee 2/7-Color Marquee/7-Color Cycle. Stable light, can protect fish and your eyes much better. Colorful lighting can make the fish more energetic and also make the landscape inside the fish tank more clear and vivid.
- 【Hidden Filter and Water Pump】The 150L/H energy-saving and silent water pump can realize water circulation in the aquarium and maintain healthy water quality. The built-in filter cotton can effectively filter impurities, maintain the cleanliness of the water in the fish tank and reduce the frequency of water changes.
- 【Air Purification & Aromatherapy Function】The air outlet of the aquarium can always keep the interior dry. Built-in air purification cotton, can effectively adsorb harmful substances in the air and maintain fresh air. Put in the aromatherapy block, the charming aroma can relax your mood. Micro-hole design, so that the wind is softer and the fragrance is more even.
- 【Excellent Viewing】The transparent part of the fish tank is made of acrylic material, which is light and resistant to damage. At the same time, it has high transparency comparable to glass and can bring you an excellent visual viewing effect. The black shell is made of ABS material, which has excellent impact resistance and heat resistance, making the fish tank strong and durable.
- Aqueon Led Minibow Aquarium Kit, 1 Gallon, Black
- Simple to setup and maintain, looks great in any room
- Lid has feeding hole for convenient feeding
- Uses Aqueon QuietFlow Filtration; cartridge, food and water care samples are inside
- Dimensions: 8.5" x 6.25" x 9.25"
- Complete Forest Micro Landscape Kit: Elevate your aquarium experience with our all-in-one Forest Micro Landscape Aquarium Kit. This comprehensive set includes a stackable mini plastic fish tank, a packet of aquarium gravel, a charming resin rabbit, a detailed tree stump, a mini fence, and a plastic pine tree.
- Versatile Starter Aquarium: The Tiny Starter Aquarium, designed for small aquatic wonders. The compact cube aquarium is perfect as a feeding box for tiny aquatic animals like shrimp and small fish. Additionally, it doubles as a viewing box for captivating seaweed and moss balls, offering a unique and interactive aquatic experience.
- Crystal-Clear View with Transparent Walls: Enjoy a crystal-clear view of your aquatic friends and the carefully curated micro landscape. The transparent walls of the mini tank add elegance to your surroundings, providing a perfect demonstration of the delightful in-tank world you have created.
- Stackable for Creative Displays: Take your aquarium experience to new heights by stacking multiple cube aquariums. The pleasing aesthetics when stacked not only optimize space but also foster children's observation and curiosity. Create imaginative and visually stunning displays that captivate both young and adult enthusiasts.
- Easy to Set & Cleaning: The building block aquarium is made of smooth, burr-free acrylic, which ensures the safety of users and aquatic life. The inner tank and frame can be separated for easy cleaning. Hold the transparent inner tank with one hand and the outer frame with the other, pull in the opposite direction to open the aquarium.
Our Review Process
To ensure you get reliable product recommendations, we follow a detailed review methodology that includes:
- Market Research: Scanning best-selling and trending products in this category.
- User Feedback: Reviewing customer reviews, star ratings, and complaints.
- Hands-On Testing: Trying select products ourselves when feasible.
- Feature Comparison: Evaluating specs, durability, pricing, and safety.
- Expert Opinions: Consulting with niche experts or credible reviewers.
We independently select the top 10 options based on value, quality, and usability. To learn more, visit our detailed review process.
Key Considerations Before Buying Fish for 1-Gallon Tanks
1. Tank Size and Space Limitations
One of the most critical factors to consider when purchasing fish for a 1-gallon tank is the limited space. Fish require adequate swimming room and territory to thrive. Most species need more space than a 1-gallon tank can provide, making it essential to choose small, compatible species that can survive in such confined conditions.
2. Type of Fish
When selecting fish for a small tank, it is vital to choose species that are suitable for smaller environments. Consider fish that are known to thrive in small spaces, such as Betta fish, certain types of shrimp, or small snails. Research each species’ specific care requirements, as some may need specific water parameters or tank mates.
3. Water Quality and Maintenance
Small tanks can experience rapid changes in water quality, making regular maintenance even more crucial. Ensure you are prepared to do frequent water changes and monitor parameters such as pH, ammonia, nitrite, and nitrate levels. Investing in a quality water testing kit can help maintain a healthy environment for your fish.
4. Filtration and Aeration
Even in a 1-gallon tank, proper filtration and aeration are necessary to maintain water quality. Look for a filter designed for small tanks that won’t create too strong of a current, which can stress delicate fish. Additionally, consider using a sponge filter or an air stone to enhance aeration without overwhelming your fish.
5. Temperature Control
Temperature regulation is vital for the health of your fish. Ensure that you have a reliable heater if you plan to keep tropical fish, as many need water temperatures between 75°F and 80°F. Be mindful of the tank’s small size, as heaters can be quite powerful, leading to fluctuations in temperature that can harm your fish.
6. Compatibility with Other Species
If you plan to house more than one fish, compatibility becomes a significant consideration. Some fish are territorial or aggressive, which can lead to stress or injury in a small tank. Research fish behavior and choose species that are known to coexist peacefully in limited space.
7. Feeding and Diet
Feeding requirements are also important to consider. Small tanks can quickly become polluted with uneaten food, leading to poor water quality. Opt for high-quality, appropriate-sized food and feed small amounts to ensure that all food is consumed. Monitor feeding habits to adjust portions accordingly.
8. Lifespan and Growth Potential
Consider the expected lifespan and growth potential of the fish you are interested in. Many species can outgrow a 1-gallon tank, leading to health issues. It’s essential to understand how large the fish will get and whether they will remain suitable for your tank over time.
FAQs
What types of fish can I keep in a 1-gallon tank?
In a 1-gallon tank, it’s best to keep small fish or a single betta fish. Suitable options include neon tetras, guppies, or a single dwarf shrimp. It’s important to avoid overcrowding, as smaller tanks can lead to rapid water quality changes.
How many fish can I put in a 1-gallon tank?
Generally, it’s recommended to keep only one or two small fish in a 1-gallon tank. Overcrowding can lead to poor water quality and stress for the fish, which can result in health issues.
What is the ideal water temperature for fish in a 1-gallon tank?
The ideal water temperature for most tropical fish ranges between 75°F and 80°F (24°C to 27°C). It’s essential to use a heater with a thermometer to maintain consistent temperature levels, especially in smaller tanks.
How often should I change the water in a 1-gallon tank?
For a 1-gallon tank, it’s advisable to perform partial water changes of about 25% to 50% once a week. Regular water changes help maintain water quality and remove toxic compounds that can accumulate in small volumes of water.
What type of filtration is best for a 1-gallon tank?
A small sponge filter or a low-flow internal filter is ideal for a 1-gallon tank. These filters provide adequate filtration without creating too much current, which can stress small fish.
Can I use live plants in a 1-gallon tank?
Yes, live plants can be beneficial in a 1-gallon tank. They help oxygenate the water and provide hiding spots for fish. Low-light plants like java moss or anubias are good choices for small tanks.
How do I maintain water quality in a 1-gallon tank?
To maintain water quality, regularly check the water parameters, perform weekly water changes, and avoid overfeeding. Additionally, consider using a water conditioner to remove harmful chemicals from tap water.
Do I need an air pump for a 1-gallon tank?
An air pump is generally not necessary for a 1-gallon tank, especially if you have a filter that provides sufficient water movement and aeration. However, if you keep fish that require higher oxygen levels, an air pump can be beneficial.
What should I feed fish in a 1-gallon tank?
Feed fish in a 1-gallon tank high-quality flake or pellet food suitable for their species. Be cautious with portion sizes, as overfeeding can quickly deteriorate water quality. It’s often best to feed small amounts once or twice a day.
Can I keep a betta fish in a 1-gallon tank?
Yes, a betta fish can live in a 1-gallon tank, but it’s essential to provide proper care, including filtered water, regular changes, and a suitable environment. However, a larger tank is generally recommended for better health and well-being.
The Bottom Line
In conclusion, selecting the right fish for a 1-gallon tank can be a rewarding experience, but it requires careful consideration of the species’ needs and compatibility. The ten fish outlined in our list have been chosen based on their suitability for smaller environments, ease of care, and overall hardiness. Each fish brings its own unique charm and characteristics, making them excellent choices for both novice and experienced aquarists looking to create a vibrant aquatic display in limited space.
By following our curated list, you can ensure that you are setting yourself up for success in maintaining a healthy and thriving aquarium. Not only will you be able to enjoy the beauty of these fish, but you’ll also gain valuable insights into responsible fishkeeping practices. Remember to keep in mind the specific requirements of each species, such as water parameters and tank mates, to create a harmonious environment. With the right choices, your 1-gallon tank can flourish, offering you a rewarding and tranquil underwater experience.
