A 40 gallon tank is big enough to house a fair number of saltwater fish, but the exact number and type of fish will depend on the specific dimensions of the tank and the filtration system that is in place.
Some saltwater fish that could potentially be housed in a 40 gallon tank include clownfish, damselfish, gobies, wrasses, and certain species of tangs and angels. It is important to do thorough research on the specific needs of each type of fish before adding them to the tank to ensure that they will be able to thrive in the environment.
20 Best Saltwater Fish For 40 Gallon Tank
1. Fluval Flex Saltwater Aquarium Kit 32.5 Gallon Black
Foam Filter Blocks with Handles2x.
Activated Carbon Inserts2x.
BIOMAX InsertsCirculation Pump with Output NozzleFluval Marine 3.
The Flex Saltwater 32. 5 US Gal aquarium makes an exciting addition to Fluvals bold curved aquarium series. It comes equipped with a mobile device operated Marine 3. 0 LED that offers total control over brilliant custom colors, multiple dynamic effects and a programmable 24-hour light timer.
The Fluval Smart App also allows you customizable color spectrum or to select from several preset modes. (Operates with Bluetooth on your personal mobile device, that is not included) In addition, this all-new Flex includes a built-in filtration system with 2 independent multi-stage chambers for maximum cleaning efficiency.
Fluval Sea EVO packs the same performance features as a tank several times its size, but is small enough to fit on any desk or counter top. A super bright 14000 K LED provides optimal conditions for healthy coral growth, color and conditioning, while powerful 3 stage filtration with oversized media delivers amazing water quality.
Go ahead and grow your mini reef with confidence and creativity. Endless possibilities await.
Coralife LED BioCube Aquarium Kit, 16-gal; Give your finned friends a sleek new home with the Coralife LED BioCube Aquarium Kit. This stylish tank features a modern hood with vibrant LED lighting for both fresh and saltwater environments.
It has an integrated 24-hour timer and includes automatic 30-minute sunrise/sunset and 60-minute moonrise/moonset functions to replicate a natural day/night cycle. This aquarium is also easy to setup and maintain with built-in filtration that is compact and customizable.
Coralife LED BioCube Aquarium Kit is great for beginners or pet parents that are ready to take their home tank to the next level.
The Ball Round Aquarium Bierb Classic 15 LED Black has a diameter of 30 cm and holds 15 liters of water. The complete set includes next to the acrylic aquarium a durable LED light unit, a aquarium pump, a transformer, an outlet stone, ground floor made of ceramic and a filter cartridge.
The patented filter system is hidden on the ground in the black foot of the aquarium. The combination of biological, chemical and mechanical filtering makes a fully filtered aquarium from the BIRORB.
Thanks to the acrylic disks, the aquarium is particularly stable and resistant. The slices are much easier than glass so that the site of the aquarium can be easily changed at any time. The high transparency of the material (93%) makes the aquarium walls particularly transparent.
For complete operation, the aquarium requires a secure 12 volts voltage.
Aquarium Kit contains what you would need to get started on your own aquarium fish tank. It features a unique “bent glass” frameless design that will look sleek and fit seamlessly into your home. Typical aquariums are built using 5 pieces of glass glued together, whereas our tanks are only 3 pieces which provides increased strength and quality through fewer glue points and seams.
It contains rounded corners that provide superior visibility from all angles. The Penn Plax radius curved corner glass aquarium kit is available in a variety of sizes to accommodate your aquatic interests and needs.
The smaller varieties are ideal for use as a Betta fish tank while the larger kits are great for housing small types of fish like guppies, rasboras, cory cats, dwarf gouramis, platies, and more. Simply fill this desktop fish tank with the décor of your choosing (not included in kit).
This is a very sharp looking tank; all strong glass, bent curves and just about as open as anyone could ask for. And it looks great! Excitedly, I waited for it, and once it arrived and the cycle completed, I moved my betta into it.
At first, the fish just kind of looked around and swam a bit. As time went on, though, he became more and more jumpy. The water parameters were fine. But for whatever reason, he did not care for this tank.
Maybe he sees his reflection? I do not know. A couple months later, I moved him out of this tank into a more standard, run-of-the-mill tank and he is much happier. Later, I purchased another betta for this tank.
He, too, just continually glass surfs and seems rather anxious. Again, I moved him from this tank into a general, generic tank and he likes it much better. As for the filter– even on it’s weakest setting, it still is way, way too powerful for a betta.
the output blows them around like a snowflake during a blizzard. I ended up buffering it with a sponge AND plants in order to have it be calmer. The suction cups that hold the filter on the wall also continually come off.
The light really is too weak for anything at all, not even low light plants. At best, it will light up half the tank.
This glass frame-less tank is clear and beautiful with smooth corners for unobstructed viewing. Comes with a clear plastic cover, which is kind of flimsy but fine for now. I do like the mat that came with the glass to keep it from sliding.
The light is nice and bright, although I wish it had a on/off button instead of having to unplug it every night. The filter is great but a bit too strong a current for my fish. However, the tank itself is worth the money all by itself.
Very happy with this 5 gallon glass tank for my Betta, shrimp and snails and I would recommend it to anyone who wants a good quality smaller tank. Thanks.
The kit features Marineland 3-stage hidden filtration with a Rite-Size Z cartridge and Marineland bio-foam (included in the kit), and includes an adjustable flow filter pump. The white LEDs create a shimmering light in the water that mimic the underwater effect of sunlight, and the blue LEDs produce a relaxing moonlight glow.
Also, included is a base and a unique glass canopy that slides to the back of the aquarium for easy feeding and water care dosing. This easy-to-assemble kit is beautifully designed and easy to maintain.
I’ve had this tank for a few years now. The only thing that broke was a little plastic piece that connects the filter so its pretty loud as the water is splashing back into the back part of the tank and not into the tank itself.
The Marineland company was super nice but unfortunately the parts been out for close to 6 months now. Its super hard to clean the back tank, even for me with small hands and if you drop a piece back there, good luck! It also seems to loose water quickly, evaporation I’m sure.
I just don’t have this much of a problem with my other tanks. I bought a heater and stuck it in the back tank so it doesn’t take up space in the main. Water is pretty strong but my bettas and other fish throughout the years live through it.
Havent had a problem with fish getting stuck to the filter area. Still a lovely tank that I would recommend, especially for the price!.
For the discerning aquarist for whom nothing but the best will do, this product can make even the most extreme aquatic dreams come true. The light bulb is not included. You can add a background of your choice or use it as a divider for two rooms.
This product is beautiful and you won’t believe how your fish and decorations will pop when viewing your aquarium. Color: Clear, Size: 46 Gallon (20″ H x 36″ W x 16. 5″ D).
Hi, I’ve had my tank for about 7-8 months now. The top is a bit of a problem yes, but it is very easy to drill, very heavy Lexan plastic, there are holes for a H. O. B. and your heater but you will halfto drill for your air lines and down tubes.
I use it as my community tank and I have gotten a few comments about what a nice tank it is. The major drawback is the top, a big thick center support peace makes gravel vac and netting fish a nightmare, also it comes with the cheapest light fixture in the hobby so you will want to replace that with LED.
Also there is no feeder hole so you will need to drill one and make a lid. Other than that it is built very well, the bow is awesome and the corner seams (actually curved seamless) are a nice touch to the aquarium.
The first one came damaged but they sent the replacement tank very fast and easy customer service to work with. Hope this helps.
I took a chance when ordering this product because although the description offers overall dimensions, it does a poor job of describing the opening of the tank, coverings, and outlet/inlet areas. For the benefit of future shoppers, I offer the following: The tank arrived in a torn and weathered box but was in pristine condition thanks to substantial foam padding and plastic wrap surrounding the tank.
This was shipped direct from manufacturer approx. 2 weeks after order and weighed only 32 lbs so I was able to carry it inside and up a flight of stairs with ease. The bottom has a coating of removable film protecting it.
I ordered this with the optional black background and the integrated color looks stunning. The tank comes with a florescent light “hood” that rests directly on top of the acrylic tank opening. Since I will be using an upgraded lighting system, this is useless and leaves the predicament of finding a cover for the large rectangular opening that runs through the middle of the top of the tank.
The dimensions of this opening are approximately 24″x7. ” There are three other small openings. One is in the middle back of the top (presumably for hang-on filter/skimmer) and measures approximately 12″x2″ and the other two are approximately 1 1/2″ diameter circular cutouts on the far left and far right sides of the top at the back.
These will work well for inlet and outlet plumbing. There are also two tiny drilled holes in the top of the tank near the back corners, 1/4″ diameter. Think that sums it up. Very nice product. The molded sides are especially nice and present an uninterrupted view of inhabitants.
BiOrb Classic 60 Litre Silver Aquarium with Multi Colour LED Remote This BiOrb aquarium comes in the classic spherical design with multi-colour, remote controlled lighting and a patented filter system.
Complete set, consisting of acrylic aquarium, light unit, pump, transformer, air stone, filter cartridge, ceramic bed. It is a large and generously sized acrylic aquarium that includes everything you need to get setup in no time The low voltage LED lighting illuminates your aquarium in style and allows you to see your fish during both the day and at night.
The LED light features a curved underside which helps to keep moisture off the surface, which helps to reduce the need for cleaning, and can last up to 50,000 hours of use. The Biorb 60L features a Multi Colour LED remote control light system which elegantly illuminates your aquarium both during the day and at night for your viewing pleasure.
The curved underside design of the LED light prevents moisture build up, helping to reduce the need for cleaning.
Lighter, brighter, safer, and stronger than glass. Insulates better than glass. Choose between blue or black backgrounds. Choose from a variety of sizes. Perfect for fresh or salt water fish. Pictured stand is sold separately.
Your exotic fish will dazzle like never before in the Clear For Life Rectangular Aquarium. Acrylic is better than glass in almost every way: it’s clearer brighter stronger and lighter. Your fish will display better and they’ll be safer too: acrylic won’t shatter like glass.
Available in sizes from 10 to 500 gallons in two background colors. Please note: The wood cabinet stand pictured is sold separately.
Depth by Design Replicating natures deep aquatic designs can be difficult. Fish feel safe in their caves while corals and plants like space to grow all the while with maximum exposure to light. This Fusion Pro 2 Series aquarium kit makes it easy with an almost perfect depth to height ratio to create a beautifully aquascaped saltwater reef or freshwater planted tank.
With fish feeling secure and plenty of room to grow, this true AIO (All in One) aquarium kit comes standard with a built-in emergency overflow, adjustable water level risers, leveling mat and safe screen lid.
Hidden behind all that space is a seamless filter wall that houses a controllable DC return pump and essential filter media housed inside a custom caddy. Design from nature. Created by you.
Premium Tempered & Ultra-Transparent Glass Aquarium with LED Light and Stand (Complete Aquarium Setup) Description: Perfect for any personal aquarium keeper, our tanks are designed to house & breed marine life, coral, aquatic plants, and aquascaping.
The tank is made of high-quality low-iron tempered ultra-white transparent glass (“crystal glass”), which can withstand the damage and impact in daily life, and is very durable. Resistant to scratches, fingerprints, and acids/alkali.
The visible light transmittance is greater than 91. 5%. The thickness of glass: 0. 47 inches. The frame is all metal to resist saltwater erosion. It will never deform or fade. Including professional aquatic LED tri-color lighting source.
It can breed marine life, corals, Arowanas, aquatic plants, and landscape water features. Products include cabinet, water pump, and filtration system with filter media. The frame can resist tension and torque deformation caused by heavy loads.
Corrosion-resistant, easy to clean and maintain. Can keep the water clean for a long time. Inner size of filtration system sink. All glass is bonded by German original ultra-long-lasting biophilic silica gel, which can resist saltwater erosion for up to 20 years.
The most fashionable design in 2020, every detail reflects the modern design concept, and you can clearly see each aquatic plant. The pet fish swims gracefully in front of you. A better immersive experience.
Give your pet water creatures a hide and relax luxury home.
Fluval · 9 gallons · Glass · Bow Front · With Starter-kit The 9 gallon Fluval Flex Freshwater Kit is one of very few freshwater aquarium kits to incorporate brilliant illumination and multistage filtration with convenient aquarium features and contemporary design.
Your aquatic atmosphere will stand out amongst the competition with 36 white and 3 RGB fully adjustable 1900 LUX LEDs shimmering over your fish and plants, while the dimmable 7500K LED lamp promotes plant growth.
Choose from 80+ different hues for an endless selection of color blends and special effects options such as cloud cover, storm and full color cycle, all controlled from your included FLEXPad remote control.
This is a fully fledged glass tank, and the infrared remote sensor is neatly integrated and easily accessible on the canopy. To achieve superior water quality, a powerful 3-stage filtration is included with oversized mechanical (foam), chemical (carbon), and biological (Biomax) media.
The Multi-directional 61 GPH dual outputs allow customized water flow, all hidden nicely in the rear compartment, allowing the focus to remain on your beautifully manicured aquascape. This aquarium features a unique curved front, creating the illusion of a larger aquatic environment and modern look to suit any room in your home or office.
The water line of the rear compartment remains hidden with the stylish honeycomb wrap and ensures your entire aquarium looks sleek and clean at all times. For added functionality and user ease, enjoy the freedom of feeding your fish through the convenient feed top cover opening.
The easiest way to create a breathtaking fresh or saltwater aquarium set-up is with the SeaClear System II Aquarium. The tank itself is Sea Clear’s sparkling acrylic, with smooth rounded corners for great looks and safety.
Acrylic is 17 times stronger than glass and other commonly used aquarium materials. Seams are molecularly bonded and heat polished, not joined with glue or sealers. This means your SeaClear Aquarium will be virtually leak and breakproof.
Because acrylic is impervious to the corrosive effects of saltwater, SeaClear Aquariums are safe for both fresh and saltwater use. Convenient, efficient and economical to run. Fixture is compatible with any T8 or T12 24″ fluorescent tube.
Very nice, love the seamless style and quietness of the tank. Ensure you hop on the website for sea clear as the directions for set up are not great. Also want to put a charcoal bag or filter in the med tray as indicated in another review.
For someone wanting a low time investment on a self contained tank, this one is for you. Would recommend if you have or know someone that can wire in an additional light into the hood to do that. light works well, but if you want more you have the option to add.
Single light ballast included with light provided with tank.
The All-Glass standard size aquarium is made with care to assure that it can stand up to almost any application. These aquariums come in a wide range of sizes as well as Black and Oak trim styles. Large aquariums feature one-piece center-braced frames that eliminate glass bowing.
First and foremost, the dimensions on this tank listed here are incorrect. The actual exterior (outside) tank measurements of a 20 gal “long” is 30 x 12. 5 x 12. 5. I just measured it precisely, So let’s clear that up straight away.
Secondly, this is probably the least amount that I’ve paid for this size tank pretty much ever, so take that into consideration as well as you read further. It held water! I filled it half way and left it sit for a week on newspaper checking for exterior moisture every day.
None to find after a week’s time. So that’s the good news. Now the reason for the 3 stars, I’d probably give it 3. 5 if there was such a thing, but not 4. Aesthetically, it is poorly made. There is silicon on the glass all over the place.
I’ll explain; when the 5 pieces of glass are put together no care was taken to make sure that the silicon was ONLY in the places needed to construct the “box”. Instead it is clear that it was basically just “slopped” in there, it’s even on the OUTSIDE of the glass in places, this means that in order to have a clear “nice looking” tank, you’ll need a razor blade and a few hours of your time BEFORE you use this tank in order to clean and cut away all of the “over spill” of silicon both inside and outside at the edges.
If you don’t, when you turn on your lights and sit back to enjoy your creation, you will see the excess silicone in your window (it glares against the lights and makes it look “dirty”), on the corners, edges, wherever you didn’t get rid if it.
So take this into consideration when purchasing. If you intend to do any kind of “Aquascaping”, or want this as any kind of “display” tank, I would recommend a different brand. If this is just a “breeder” or a kids tank or you don’t mind cleaning up after the rush job that the factory just slammed together, then for the price, these are great.
They do come with a warranty, so if you get a “leaker” just take it back and Petco will get you a new one.
Looked at all the negative reviews on petco website, but decided to purchase anyway. So, I wanted to leave my own review in hopes of helping other potential buyers. -Caulking is a bit of a mess, as many stated in reviews the caulk job is subpar to say the least.
I looked at 7-8 different tanks in the petco store before selecting the least offensive caulk job. -These tanks are not the same tanks being sold in “higher end aquatic stores, visited the local fish store after purchase to get some ideas on set up and check out what they sold, and to my surprise the Aqueon tanks in the fish store seemed to be of much higher quality, in that the caulking looked better, the frames seemed more rigid, and they even had somewhat of a cardboard box.
Seems Aqueon, like many other manufacturers build products based on the store their going to. ps a John Deer mower from Lowe’s Hardware isn’t a “real John deer mower”, and it seems Aqueon has taken this approach in building tanks.
-The size of this tank is awesome, I prefer longer tanks with lowers sides, just a personal preference but also beneficial in some of the fish I keep that like to move across the tank and not so much vertical swimming.
-It’s holding water this far, some had mentioned leaks, I am currently doing a “leak test” on concrete floor in basement so I don’t ruin hardwoods in the main living areas should it spring a leak. I’ll let the water remain for a couple more weeks before inspecting caulk seams and moving upstairs to the main living area.
-The price is very fair, as stated, I visited the local fish store and some other tanks of similar size were double to 5x’s greater in costs. -it’s hard to find a good fitting top, I plan to have one custom cut at the local hardware store to fit my needs.
-To sum it up, if your expecting a very high end tank for $100. 00, you need to rethink things. I will say, you are getting what you pay for with this tank. It’s a decent tank for $100. 00. As long as it continues to hold water and doesn’t spring a leak with my Endler’s, I’ll be happy.
I do wish the caulk jobs were done with a little more accuracy and care.
I ordered this for pick up in store. I picked up the tank before picking up kids from school while my 4 year old was with me. In 111 degree weather. Where am i getting with this?. well after finally getting home and getting to cool off for a bit i decided to clean the tank.
And thats when i noticed how horribly the silicone was done. but thats not the worst part. The worst part was scraping my fingers along SMALL SHARDS OF BROKEN GLASS because it looked just the same as all the silicone! With the tank in the sink I blasted with water.
Nope didn’t do the trick. I had to use damp paper towel and my fingers to make sure all shards were gone. Normally I would’ve returned but again we have 111 degree heat and with running kids around all day and petco not being exactly close to us I’m dealing with it.
I’m using it as a terrarium. I wouldn’t trust is as an aquarium because of how badly the silicone was done. I’m just utterly shocked that the store gave me a tank with broken glass. Should be a $5 tank because of quality.
New modern design – same innovative all-inclusive aquariums Sleek modern hood with LED lighting. Bright white LEDS for daytime, sparkling blue Moon Glows for nighttime and color enhancing LEDS for maximum beauty.
Integrated 24-hour timer with three independent channels. Automatic 30 minute sunrise/sunset and 60 minute moonrise/moonset functions. Each aquarium is 2″ taller than original creating a larger viewing area.
Compact and customizable filtration chamber. Hinge-top canopy design (also compatible with BioCube 14G and 29G. Quiet submersible pump, dual intakes and adjustable return nozzle. Clear glass back panel for easy refugium set-up.
Natural LIVE Ocean Saltwater for your Marine Aquarium, nutrient enriched. No mixing required, this is ready for instant saltwater changes or instant new marine aquarium setups. With more than 11,000,000 live bacteria per gallon, fortified with QX-23 enrichment solution.
Maintains proper pH by providing improved buffering capacity.
Going from the top of the Reefer system down to the bottom, the first thing you will notice is the crystal clear glass and elegant beveled edges. The second thing you may or may not notice is the slim overflow that houses all the drain and return plumbing to keep the water a constant level within the display tank and surface skimming while being super quiet and taking up a very small amount of real estate inside of the tank.
The REEFER Deluxe incorporates the all-new Hydra 26 HD LED lighting units with Red Seas bespoke mounting system into the Reefer reef ready systems in a convenient single package. The Hydra 26 HD unit provides the most up to date LED technology, offering a full spectrum, 7 color LED configuration giving great color rendition and a multitude of lighting effects.
The revolutionary control system dynamically adjusts the power available to each color by utilizing power not being used with other colors, effectively enabling selected channels to be boosted to above 100% output.
The lighting is fully controllable via the built-in WiFi which is compatible with iOS and Android devices, and with any wifi-enabled Mac or PC. The bespoke mounting system bolts firmly onto the rear wall on the tank and can be rotated to the upright position during reefscaping or other tank maintenance.
REEFER Deluxe is available in a choice of 6 models with 1, 2 or 3 LED units.
Tank is beautiful, Stand construction is good. The adjustable legs are very difficult to access when trying to level the stand. The floor in the cabinet should be able to be installed after leveling takes place easy fix with small amount of rework to design.
Sump design and setup in the cabinet for the 100 reef tank is very poor just packed in the sump from a larger tank. The sump has a small ato area and ZERO room for any equipment or supplies (Power supplies,Cables,Surge protector) would have been better to down size sump and make the ATO area open or add removable divider for Refugium and just leave off ATO entirely.
due to it only being 100 gal tank and such a small cabinet. Its a shame too with a bit more thought to design as far as space utilization it would be an unbeatable Tank for Beauty and quality.
I love my new aquarium! We recently moved and I tore down and sold my 30 freshwater aquariums. It was sad but I used the money to purchase my new 130. 4 The cabinet and aquarium are beautiful! The glass is of incredible quality.
My first saltwater experience has been fun so far! Thanks for the great tank! My only complaints are the plumbing seems like it should be a little nicer for the price. It feels cheap and I was scared I’d break it while tightening fittings.
It’s just a shame it wasn’t as impressive as the tank/stand. Thanks!.
I love the 100. 3 Aquarium. But can’t say I’m not dissapointed that the White Cabinet has Black Interior and Tank Base. I wouldn’t have gotten the White if I knew this. The video of build showed all white.
Sure this is way to make more money. Still think the aquarium is amazing but can’t give 5,,, Stars.
The most important factor when stocking a 40 gallon tank with saltwater fish is compatibility. Some fish are very territorial and can become aggressive toward fish that are similar in size or shape. It is important to do research on the fish you are interested in and make sure they are compatible with the other fish in your tank.
Another important factor to consider is the size of your fish. Some saltwater fish can grow to be quite large and will need a lot of room to swim. It is important to make sure your tank is large enough to accommodate the fish you are interested in.
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