10 Best Fish For 50-gallon Aquariums [2025]
This post contains affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Finding the best fish for 50-gallon aquariums can be a daunting task, as numerous factors such as compatibility, size, and behavior come into play when selecting the perfect aquatic inhabitants. To simplify your search, we have meticulously shortlisted 10 exceptional fish species that thrive in this environment. Our curated list not only saves you time but also alleviates the hassle of extensive research, ensuring you make informed decisions for your aquarium setup.
Top 10 Fish For 50-gallon Aquariums In The Market
Fish For 50-gallon Aquariums Review
- GLASS AQUARIUM: Rectangular glass aquarium makes an ideal home for your fish.
- ADD ON ACCESSORIES: Mix and match with your favorite Tetra filtration, lighting and water care products (sold separately).
- EASY CUSTOMIZATION: Use assorted Tetra accessories (sold separately) to make your aquarium your own.
- 55 GALLON TANK: Measures 48 inches wide by 13 inches deep by 20 inches high.
- TETRA BRAND: Dedicated to helping seasoned hobbyists and beginners alike enjoy a successful, lifelong aquatic experience.
- GLASS AQUARIUM KIT: Glass aquarium with 2 low-profile hinged hoods that house energy efficient white LEDs to create a natural underwater shimmer effect
- EASY TO SET UP: Complete kit includes everything you need to get started
- FILTER INCLUDED: Comes with the Tetra Whisper PF 60 Power Filter with Tetra Large Bio-Bag Filter Cartridge
- WITH HEATER: Includes a 200-watt heater and thermometer, along with a fish net, Tetra AquaSafe water conditioner sample, TetraMin food sample and setup guide
- 55 GALLON TANK: Measures 48 inches wide by 13 inches deep by 20 inches high
- Aquarium filtration system that offers superior contact time with filter media and energy efficient pump lowers operating costs
- Quick and easy installation; we recommend that you clean aquarium filter every 2 weeks for maximum operation and efficiency
- Provides optimal mechanical; chemical; and biological filtration
- Comes equipped with AquaClear Foam; Activated Carbon Filter and BioMax and Cycle Guard for superior water quality
- Filtration volume is up to 7 times larger than comparable fish tank filters
- Dense floss removes particles and debris
- Activated carbon removes toxins, odors and discoloration
- Patented bio-holster removes toxic ammonia and nitrites
- Diffuser grid removes additional toxins while adding oxygen for more active fish
- Reduces splashing makeing the return exceptionally quiet
- Outstanding Performance: This 450 GPH aquarium filter has a maximum head height of 5.5 ft, designed for 50 to 150 gallon fish tanks. It circulates water 4 to 6 times per hour, effectively improving water quality and maintaining a clean environment for your fish
- Efficient Filtration System: Using this 150 gallon fish tank filter, keep your aquarium crystal clear. The bio-sponge traps impurities, improving water quality and reducing the frequency of water changes. It's reusable and easy to clean
- Multi-Functional: This submersible aquarium filter combines water circulation, air supply, filtration, and wave-making drainage. It creates a natural environment for your pets and works in both saltwater and freshwater
- Adjustable aeration and water flow: The sponge filter features a control knob at the end of the air tube, allowing you to easily regulate the amount of air entering the tank, ensuring effective aeration for your aquarium
- Whisper Filter: Equipped with advanced noise reduction technology, our aquarium pumps & filters operates below 35 dB. Enjoy a tranquil environment, while the soothing sound of water adds to your relaxation as you observe your fish
- WHISPER QUIET The Tetra Whisper EX Power Filter provides silent multi-stage filtration for clear clean water .SIZE This filter fits 45 to 70 gallon aquariums - 240 GPH
- FAST SETUP Sets up easily right out of the box – no priming required
- CONTINUOUS FLOW Moves water continuously to prevent debris buildup
- NO-MESS FILTER CARTRIDGE CHANGES Design minimizes dripping to make cartridge changes easy
- SIZE This filter fits 45 to 70 gallon aquariums - 240 GPH
- 【5-in-1 Power Hub Aquarium Stand】Integrated with 2 AC outlets + 2 USB ports, this 40 gallon fish tank stand powers all your aquatic/reptile equipment (filters, heaters, lights). Cable management slots keep wires organized and safe.
- 【Dual-Sided Assembly Design】Customize your 40 gallon reptile tank stand setup – position power outlets left/right for optimal accessibility. Adjustable shelves accommodate filters up to 15" tall
- 【Heavy-Duty 750LBS Capacity】Engineered with reinforced steel frame + P1-grade wood, this 55 gallon fish tank stand features 6-leg stabilization and crossbar supports. Industrial-grade construction ensures wobble-free performance
- 【Multi-Tank Storage System】Lower tier includes bonus 5-gallon tank space for quarantine/hospital/isolation needs. Two adjustable shelves store substrates, decor, test kits, and cleaning supplies
- 【Universal 37"x19"x31.5" Fit】Compatible with 40-50 gallon aquariums, this reptile tank stand seamlessly integrates into living rooms, bedrooms, or offices. Non-slip pads protect floors from scratches
- Fits 40-50 Gallon Aquarium: At 36.2”L x 18.9”W x 24.4”H, the fish tank stand fits tanks up to 40-50 gallons, The top bears up to 660 lb, the second shelf 150 lb. Please confirm the sizes before purchasing for your needs
- Maximizes Space: The 2-tier aquarium stand makes the most of vertical space. The top fits up to 40-50 gallon tank, while the middle for smaller tanks, fish food, cleaning tools, etc. The bottom offers ample room for fish accessories to keep everything neat and tidy
- Sturdy Build: The 40-50 gallon fish tank is made of heavy-duty metal, with a top cross-frame for stability and corner triangles for extra strength. The top covered with EVA pads keeps your aquarium from slipping, making it a reliable choice to support your tank
- Versatile Functionality: Not just for fish tanks, the aquarium rack can also hold glass containers, reptile tanks, etc. Perfect for bedroom, living room, office, and more, it doubles as a storage rack for books, plants, printers, and other items
- Easy Assembly: The reptile stand has a sleek and timeless look that easily blends with any home decor. All parts are clearly numbered, and come with necessary installation tools and a detailed, easy-to-understand manual, allowing you to assemble with ease
- Sturdy & reliable construction: Made of 1.57 "L x 1.57" W thickened table legs, our fish tank table supports up to 660 lbs. The included anti-tip devices help avoid tip-over accidents. The moisture material ensures durability.
- Space-saving 2-in-1 Design: Maximize space efficiency with our stand. It can hold 40-50 gallon fish tank on top and a 5-10 gallon aquarium on the bottom or fish tank kit. Suitable for most standard aquariums.Tanks not included.
- Orderly storage: This fish tank with stand easily keeps everything organized. The built-in cabinet stores fish food, cleaning tools, and other accessories, ensuring everything remains neatly stored and readily accessible.
- Convenient and practical: The integrated power outlets can be easily installed, without the need for additional tools. Easy to connect electronic devices such as lights, heaters, and oxygen pumps, simplifying your fish tank management.
- Fashionable appearance: This sleek, modern black Aquarium stand complements various home decors. The cabinet door's crossing decor introduces a distinctive and fashionable vibe to your home.
- SmartClean technology facilitates swift and straightforward water changes in three steps, enhancing water quality for a clean, healthy aquarium.
- Includes Aqueon EcoRenew Cartridge, designed to be sustainable, biodegradable, and fully compostable.
- The Bio-Holster securely holds the cartridge in place, fostering biological filtration with a NoDrip basin design, minimizing water mess during cartridge changes.
- Suitable for all fresh or saltwater aquariums.
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 a 50-Gallon Aquarium
1. Compatibility of Fish Species
When selecting fish for your 50-gallon aquarium, it’s essential to consider the compatibility of different species. Some fish are territorial or aggressive, while others are peaceful and social. Research the temperaments of the fish you are interested in to ensure they can coexist harmoniously in your tank.
2. Aquatic Environment Requirements
Different fish species have varying needs in terms of water temperature, pH levels, and tank setup. Make sure to understand the specific requirements for the fish you want to keep. Some species may need specific plants, rocks, or substrates to thrive, while others may require open swimming space.
3. Size and Growth Potential
Consider the adult size of the fish you plan to purchase. A 50-gallon tank can accommodate a variety of species, but you should factor in the mature size of the fish. Overstocking can lead to stress, poor water quality, and health issues. Research how large each species will grow and plan accordingly.
4. Schooling Behavior
Many species of fish prefer to live in groups or schools. For those species, it’s important to buy them in adequate numbers to ensure their well-being. For example, tetras and barbs are happier in groups of six or more. Be sure to account for school size when planning your 50-gallon aquarium’s fish population.
5. Filtration and Water Quality
The filtration system in your aquarium is crucial for maintaining water quality. Before adding fish, ensure that your filter is appropriate for a 50-gallon tank and can handle the bioload of the fish you intend to keep. Regular maintenance and water changes are essential for a healthy environment.
6. Cycling the Aquarium
Before introducing fish to your new aquarium, it’s vital to cycle it properly. This process establishes beneficial bacteria that break down harmful ammonia and nitrites produced by fish waste. A well-cycled tank will provide a safer and healthier environment for your fish.
7. Budget and Initial Costs
Consider your budget not just for the fish themselves but also for the necessary equipment, food, and maintenance supplies. The initial setup may include a quality filter, heater, substrate, decorations, and water conditioners. Ensure you are financially prepared for ongoing costs such as food, medication, and replacement equipment.
8. Long-term Commitment
Owning fish is a long-term commitment that requires time and effort. Fish can live for several years, and some species can even live for decades. Make sure you are prepared for the responsibility of caring for your fish over the long haul, including regular feeding, tank maintenance, and health monitoring.
9. Local Regulations
Before purchasing fish, check local regulations regarding fish ownership. Some species may be restricted or require special permits. Ensure compliance with local laws to avoid any legal issues.
10. Source of Fish
Choose a reputable source when buying your fish. Local fish stores, online retailers, or fish farms should have a good reputation for health and quality. Inspect the fish for signs of illness or stress, and ensure that they are being kept in appropriate conditions before making a purchase.
FAQs
What types of fish can I keep in a 50-gallon aquarium?
A 50-gallon aquarium can accommodate a variety of fish species, including community fish like tetras, guppies, and angelfish, as well as larger species like cichlids and certain types of catfish. It’s important to consider the compatibility of species and the bioload they create.
How many fish can I have in a 50-gallon tank?
The general rule of thumb is to allow one inch of fish per gallon of water. However, this can vary based on the species and their needs. For example, larger fish or those that require more space might mean fewer fish overall. It’s best to research specific species and their requirements for a well-balanced tank.
What equipment do I need for a 50-gallon aquarium?
Essential equipment includes a high-quality filtration system, a heater (if keeping tropical fish), a lighting system suitable for your chosen plants or fish, and a substrate. Additionally, consider decorations and plants for hiding spots and enrichment.
How often should I perform water changes in my 50-gallon aquarium?
It’s recommended to change 10-20% of the water weekly or 25-50% every two weeks, depending on the bioload and water quality. Regular water changes help maintain water parameters and reduce toxins.
What is the best way to cycle a 50-gallon aquarium?
Cycling an aquarium involves establishing beneficial bacteria that convert harmful ammonia and nitrites into less harmful nitrates. This can be done through the fishless cycle method using ammonia or by adding a few hardy fish with proper monitoring of water parameters. The process typically takes 4-6 weeks.
Can I introduce new fish into my 50-gallon aquarium?
Yes, you can introduce new fish, but it’s essential to acclimate them properly to reduce stress. Quarantine new fish for a couple of weeks before adding them to the main tank, and ensure they are compatible with existing tank mates.
What plants are suitable for a 50-gallon aquarium?
Many aquatic plants thrive in a 50-gallon tank, including Java fern, Anubias, Amazon sword, and various types of crypts. Choose plants based on their light and substrate requirements and consider whether you want low-maintenance or more demanding species.
How do I maintain water quality in my 50-gallon aquarium?
Maintain water quality by monitoring parameters such as pH, ammonia, nitrite, and nitrate levels regularly. Use a high-quality filter, perform routine water changes, and avoid overfeeding to keep the water clean and safe for your fish.
What should I feed my fish in a 50-gallon aquarium?
Feed your fish a varied diet based on their species’ specific needs. This may include flakes, pellets, frozen or live foods, and plant matter. Always ensure that the food is appropriate for the type of fish you have and avoid overfeeding.
How can I prevent algae growth in my aquarium?
Prevent algae growth by maintaining proper lighting, avoiding excess nutrients, and keeping up with regular water changes. Consider adding algae-eating fish or invertebrates, and ensure that your tank is not exposed to direct sunlight.
The Bottom Line
In conclusion, selecting the right fish for a 50-gallon aquarium involves careful consideration of compatibility, tank conditions, and the specific needs of each species. Our curated list of the top 10 fish for this size aquarium reflects a blend of beauty, temperament, and ease of care, making it an ideal guide for both novice and experienced aquarists. Each fish on our list has been chosen based on their popularity, hardiness, and suitability for community tanks, ensuring that you can create a vibrant and harmonious aquatic environment.
By following our recommendations, you can enhance your aquarium experience significantly. These choices not only promote a healthier habitat for your fish but also encourage a beautiful display that can be enjoyed for years. Whether you’re looking to create a peaceful community tank or a lively biotope, our guide equips you with the knowledge needed to make informed decisions. Embrace the joy of fishkeeping with confidence, knowing that our selections will lead to a thriving and visually stunning aquarium.
