Best 5 Gallon Betta Fish Tanks Compared
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A 5 gallon betta fish tank is a popular target size, but when we went through the Amazon listings for betta kits, only one complete kit actually reached that volume: a 5.3 gallon tank from HYUVCX. The rest of the field sits at 3.5, 2.5 and 1.5 gallons. This comparison lays out each kit’s listed size, filter, light and heater, so you can see what a real 5 gallon option offers and what you give up if you choose something smaller.
Quick answer
- The only kit at about 5 gallons is the HYUVCX 5.3 gallon tank, a tall, slim design with a filter, a three-color LED light and a hydroponic basket, but with no heater listed.
- The closest runner-up is the eWonLife 3.5 gallon kit, the only one here that lists both a heater and a digital thermometer.
- Two 2.5 gallon kits, from RED TAIL FISH and Oltraman, both list a heater in the box.
- The 1.5 gallon glass kits from Craftsboys and iPriro are the smallest we recommend you consider, and neither lists a heater.
What to look for in a 5 gallon-class betta tank
Treat the listed volume as the seller’s number
Every figure in this article is the volume stated in the listing or its spec table. None of the sellers says how much water the tank actually holds once the substrate and equipment are in, and none of them sets a care rule. If you want to understand why tank size matters for a betta, read What Gallon Tank Does a Betta Fish Need? before you pick a kit. For anything about a fish’s health, ask a vet who treats fish.
Dimensions tell you more than the title
Two tanks with the same volume can fit very different spaces. The HYUVCX tank is listed at 18.74 inches tall and 8.27 inches on each side, which makes it a tall column. The Oltraman 2.5 gallon is 12.3 x 10.2 x 7.1 inches, a wide, shallow shape. The RED TAIL FISH 2.5 gallon is 11.8 x 8.7 x 7.5 inches. The 1.5 gallon glass kits are almost cube shaped at roughly 6.3 x 6.3 x 8.7 inches. Measure your shelf, including the height under any cabinet, before you decide.
Heater, filter and light: what the box actually lists
A betta is a tropical fish, and several listings mention a heater or a preset temperature. Only the eWonLife (a 25W heater with a 78°F preset), the Oltraman and the RED TAIL FISH kits name a heater among their contents. The HYUVCX, Craftsboys, iPriro and AQUA DAREN listings do not. If you pick one of those, plan to buy a heater separately; our post on the best small betta fish tank heater for 1 to 5 gallons compares options.
Water quality still needs testing
Listings use words like “self-cleaning” to describe filtration equipment. They do not remove the need to watch water conditions. A test kit is a sensible companion to any of these tanks, and we compare several in Fish Tank Test Kit: 5 Options Compared for a Betta.
Side-by-side comparison
| Kit | Listed volume | Material | Size (inches) | Heater listed? |
|---|---|---|---|---|
| HYUVCX 5.3 Gallon | 5.3 gallons | Acrylonitrile styrene and other plastics | 8.27 x 8.27 x 18.74 | No |
| eWonLife 3.5 Gallon | 3.5 gallons | Acrylic | 15 x 7.9 x 8.3 | Yes, 25W |
| RED TAIL FISH 2.5 Gallon | 2.5 gallons | Acrylic | 11.8 x 8.7 x 7.5 | Yes, LED digital display |
| Oltraman 2.5 Gallon | 2.5 gallons | Plastic | 12.3 x 10.2 x 7.1 | Yes |
| AQUA DAREN Nano Glass | 2.5 gallons (spec), 1.5 (title) | Glass | 11.81 x 7.09 x 7.87 | Not stated |
| Craftsboys CB-FT-15 | 1.5 gallons | Glass | 6.29 x 6.29 x 8.66 | No |
| iPriro IP130-B | 1.5 gallons | Ultra glass | 6.3 x 6.3 x 8.67 | No |
The tanks, one by one
HYUVCX 5.3 Gallon Fish Tank Starter Kit: the only true 5 gallon option
The HYUVCX is sold as a “9 in 1” starter kit and measures 18.74 x 8.27 x 8.27 inches. The listing names a bare tank, an LED full-spectrum light in three colors (white, warm and blue), a three-mode filter, a hydroponic basket, a fishing net, an aquatic plant, six shells, a packet of pebbles and a piece of coral. The pump is described as a 30dB low-noise unit with three types of replaceable filter tips for oxygenation, wave generation, filtration and pumping.
The top is a semi-open cover with a planting basket, a storage groove and an oxygen hole, so you can set food on top or grow a plant in the basket. The material is listed as AS plastic with 95% light transmittance and the seller calls it shatter resistant, with a weight of 1.7 kg for the tank itself. Who it suits: someone who wants the largest volume in this group and a clean, rimless look on a desk or counter. What to check: no heater is listed, so budget for one. The tall, narrow shape also means the water surface is small compared with the depth, which is worth thinking about when you place it.
eWonLife 3.5 Gallon Betta Fish Tank: the best-equipped kit
The eWonLife listing reads like a complete shopping list: a tank, multi-stage filtration, a heater, a digital thermometer, an LED light with a timer, a water changer and a net. The heater is a 25W unit with a preset of 78°F, and the LED thermometer displays the water temperature. Filtration begins with a sponge, then adds ceramic rings and quartz balls for beneficial bacteria, all concealed in a rear compartment so the pump does not harm the fish. The tank is 15 x 7.9 x 8.3 inches and the kit has a one-year warranty.
The listing says the 3.5 gallon space suits a betta, small schooling fish such as Cardinal Tetra or Zebra Danios, and ornamental shrimp. That is the seller’s claim, so treat it as a starting point and check compatibility with a vet or an experienced keeper. Who it suits: a first-time owner who wants the heater and thermometer in one purchase and can accept a tank that is about two gallons smaller than the HYUVCX. More on this kit appears in Aquarium Starter Kits: 11 Listings Compared by Tank Size and Parts.
RED TAIL FISH 2.5 Gallon Fish Tank Kit with Heater
This acrylic kit comes with a LED digital display heater, a built-in LED light, a lid, a water pump, 8 filtration balls, a large bunch of filtration sponge, a double-hole USB plug and instructions. The listing describes a hidden filtration area with a 3-in-1 silent pump and dual physical and biological filtration. The light has three modes and ten brightness levels. The pump offers three flow strengths and a rotating nozzle.
The acrylic is described as 5mm thick, in one piece, with eight rounded corners that the seller says make it safer around cats and children. The maintenance advice in the listing is to rinse one filter sponge per week and change one third of the water every three months. That interval is the seller’s suggestion and not a general care rule, so confirm the right schedule for your own setup with a vet-written guide. Who it suits: a buyer who wants a heated, self-contained tank in a small footprint and prefers acrylic over glass.
Oltraman 2.5 Gallon Betta Fish Tank Kit
The Oltraman kit is the quirkiest of the group because it combines a tank with an aquaponic and hydroponic planting system. The listing says the fish feed the plants and the plants clean the water, and it describes a waterfall feature, three optional LED lighting modes and artificial plants. The contents include an LED light, rock, heater, filter, pump, net, thermometer sticker, water changer and gravel cleaner. The specs list a plastic body, a 3.55 kg weight and desktop use, with a one-year manufacturer warranty.
The seller’s “self-cleaning” claim is about the plant-and-fish loop, which the listing does not back with water-quality data, so keep up regular care. Who it suits: someone who likes the idea of growing a small plant on the tank and wants a heater and the gravel cleaner supplied. The tank is wide and shallow at 12.3 x 10.2 x 7.1 inches, so make sure the desk space is there.
AQUA DAREN Nano Glass Fish Tank Start Kit
The listing here contradicts itself. The title calls it a 1.5 gallon tank, but the spec table says 2.5 gallons and gives the dimensions as 11.81 x 7.09 x 7.87 inches. The bullet text says only “Nano Glass Fish Tank Start Kit with Filter, LED Light” and “Fish Tank for small fish, shrimp, betta”, and the specs list the light as the included component, with a glass body and a self-cleaning feature.
Because the volume is unclear, it is hard to recommend over the kits that state their size consistently. Who it suits: a shopper who has confirmed the true volume with the seller and wants a black-backed glass nano tank. Until then, treat it as a close alternative rather than a first choice.
Craftsboys 1.5 Gallon Nano Glass Aquarium
This is the lean, no-frills option. The listing gives the size as 6.29 x 6.29 x 8.66 inches, the glass thickness as 4.2mm, a 3W hang-on-back filter with adjustable flow and a 3W COB LED light. The included components are the filter, the light, decorations and a fish care guide, and the seller recommends it for aquascape hobby beginners and as a good tank for small fish. The warranty is listed as one month.
Who it suits: a budget-minded beginner or aquascaper who is comfortable adding a heater. The listing names betta, goldfish, tetra and shrimp as possible residents, but that is marketing language and not guidance, so check care needs for the species you choose.
iPriro 1.5 Gallon Glass Betta Aquarium Starter Kit
The iPriro tank is similar in size to the Craftsboys but with more detail in the listing. It is made of 4mm high-definition glass with a black back panel and a cushioned black EVA base, and it is 6.3 x 6.3 x 8.67 inches. The filter is a hang-on-back unit rated at 2.5W and 250L/H with adjustable flow, and the listing reminds you to fill the filter with water before every start-up. The clip-on lamp is 8W and 450 lumens and described as full spectrum. A lid is included and the warranty is one year.
Who it suits: someone who likes a black-backed display tank and wants a longer warranty than the Craftsboys offers. As with the other 1.5 gallon kits, no heater is listed.
How the choices compare in practice
If volume is the priority, the HYUVCX wins on paper, and nothing else here gets close. If you want the equipment included, the eWonLife and the two 2.5 gallon kits are the better fit because they list heaters. If your budget or desk size rules out all of those, the 1.5 gallon glass kits are the smallest we would consider, and you should plan to add a heater and a thermometer yourself.
It is also worth thinking about what each listing leaves unsaid. The HYUVCX does not list a heater. The Craftsboys and iPriro list a filter and a light but nothing for temperature. The AQUA DAREN gives no volume you can rely on. A listing that states more is not automatically better, but it does reduce the number of surprises on delivery day. Our broader size guide, Best 10 Gallon Betta Fish Tank Setup Guide for Beginners, is worth a look if none of these feel large enough.
Mistakes to avoid
- Trusting the title volume. The AQUA DAREN listing shows how a title and a spec table can disagree.
- Assuming a heater is included. Check the “what you get” line, because several kits leave it out.
- Skipping a power plan. Many of these kits plug in through USB or low-voltage adapters, so check what is supplied before you order.
- Ignoring tall shapes. A slim 18.74 inch tank needs vertical clearance, and you will need a way to reach the bottom for cleaning.
- Putting several bettas together. See Two Betta Fish in One Tank: Why You Need Two Tanks for the reasoning.
FAQ
Is there a true 5 gallon betta kit among these?
Yes, just one: the HYUVCX at 5.3 gallons. Every other kit is listed at 3.5 gallons or less.
Which kit has a heater in the box?
The eWonLife 3.5 gallon, the RED TAIL FISH 2.5 gallon and the Oltraman 2.5 gallon all list one. The HYUVCX, Craftsboys and iPriro kits do not.
Do glass or acrylic tanks make a difference?
The listings point out different strengths. The RED TAIL FISH acrylic is described as 5mm thick and one piece, while the iPriro and Craftsboys glass tanks are 4mm and 4.2mm. The listings do not compare durability, so pick on size, features and how you plan to handle the tank.
Can I keep other fish or shrimp with a betta?
Some listings name tetras, guppies, angelfish and shrimp as possible tank mates. Those are seller statements. Compatibility depends on each animal, so ask a vet or an experienced fishkeeper before you mix species.
How often should I clean the filter?
The RED TAIL FISH listing suggests rinsing one sponge per week, but that is a product-specific note. Follow the maintenance steps for your own kit and check them against a vet-written source.
Are these tanks safe for a sick betta?
None of the listings give medical guidance. If your fish looks ill, contact a vet who treats fish rather than relying on any tank feature.
Bottom line
Pick the HYUVCX 5.3 gallon if you want the most water and will add your own heater. Pick the eWonLife 3.5 gallon if you want a heater and thermometer included. Pick one of the 2.5 gallon heated kits only if space is tight. Whatever you choose, confirm the volume in the spec table and treat every care line in a listing as the seller’s opinion.
