Aquariumanabantoid · freshwater
Dwarf Gourami: adult size, tank size & tankmates
The Dwarf Gourami (Trichogaster lalius) grows to about 4.2 in (8.8 cm SL). It needs a tank at least 24 inches long and about 15 gallons. It doesn't need a group of its own kind, at 72–81°F.
How big it really gets
Drawn to scale against common tank lengths. Green bars meet the minimum tank length from our sources.
Needs special care. Trade stock is mostly males and prone to iridovirus; SF reports declining stock quality.
Will it fit your tank?
Quick facts
- Adult size
- 4.2 in (8.8 cm SL)
- Minimum tank
- 24 inches long and about 15 gallons
- Temperature
- 72–81°F
- pH
- 6–7.5
- Hardness
- 2–18 dGH
- Group size
- 1 (solitary or pair)
- With other fish
- semi-aggressive
- With its own kind
- aggressive
- Swims
- top of the tank
- Diet
- omnivore
- Care level
- beginner
- Lifespan
- not stated in sources
Watch for: long fins that nippers target · may eat baby shrimp
Dwarf Gourami tankmates
Checked with the same rules as our tank builder: temperature overlap, pH and hardness, predation and mouth size, fin-nipping and temperament. Tank size is left out here; check it in the builder.
Good tankmates
- GuppyAdult ~2.8 in · 63–82°F
- Pearl GouramiAdult ~5.7 in · 75–86°F
- BettaNeeds careAdult ~3.3 in · 72–86°F
- Bolivian RamAdult ~3.8 in · 75–82°F
- KribensisAdult ~4.7 in · 75–81°F
- AngelfishNeeds careAdult ~7.1 in · 75–86°F
- Bronze CoryAdult ~3.5 in · 70–81°F
- Sterbai CoryAdult ~3.2 in · 75–82°F
- Kuhli LoachAdult ~4.7 in · 70–79°F
- Bristlenose PlecoAdult ~5.9 in · 70–79°F
Use caution
- Neon TetraDwarf Gourami can bully smaller, peaceful Neon Tetra.
- Cardinal TetraDwarf Gourami can bully smaller, peaceful Cardinal Tetra.
- Harlequin RasboraDwarf Gourami can bully smaller, peaceful Harlequin Rasbora.
- Ember TetraDwarf Gourami grows 4× longer than Ember Tetra and may treat it as food.
- Chili RasboraDwarf Gourami grows 4× longer than Chili Rasbora and may treat it as food.
- Celestial Pearl DanioDwarf Gourami grows 4× longer than Celestial Pearl Danio and may treat it as food.
- Cherry BarbDwarf Gourami can bully smaller, peaceful Cherry Barb.
- Rummy-nose TetraDwarf Gourami can bully smaller, peaceful Rummy-nose Tetra.
All 105 species we checked against the Dwarf Gourami
| Species | Verdict | Why |
|---|---|---|
| Angelfish | Compatible | No conflicts found |
| Assassin Snail | Compatible | No conflicts found |
| Bala Shark | Compatible | No conflicts found |
| Betta | Compatible | No conflicts found |
| Bleeding Heart Tetra | Compatible | No conflicts found |
| Blood Parrot Cichlid | Compatible | No conflicts found |
| Bolivian Ram | Compatible | No conflicts found |
| Bristlenose Pleco | Compatible | No conflicts found |
| Bronze Cory | Compatible | No conflicts found |
| Chinese Algae Eater | Compatible | No conflicts found |
| Clown Loach | Compatible | No conflicts found |
| Clown Pleco | Compatible | No conflicts found |
| Cockatoo Dwarf Cichlid | Compatible | No conflicts found |
| Common / Comet Goldfish | Compatible | No conflicts found |
| Common Pleco | Compatible | No conflicts found |
| Congo Tetra | Compatible | No conflicts found |
| Denison Barb | Compatible | No conflicts found |
| Discus | Compatible | No conflicts found |
| Dwarf Neon Rainbowfish | Compatible | No conflicts found |
| Electric Blue Acara | Compatible | No conflicts found |
| Firemouth Cichlid | Compatible | No conflicts found |
| Forktail Blue-eye | Compatible | No conflicts found |
| Giant Danio | Compatible | No conflicts found |
| Glass Catfish | Compatible | No conflicts found |
| Gold Barb | Compatible | No conflicts found |
| Guppy | Compatible | No conflicts found |
| Hillstream Loach | Compatible | No conflicts found |
| Japanese Trapdoor Snail | Compatible | No conflicts found |
| Kissing Gourami | Compatible | No conflicts found |
| Kribensis | Compatible | No conflicts found |
| Kuhli Loach | Compatible | No conflicts found |
| Malaysian Trumpet Snail | Compatible | No conflicts found |
| Molly | Compatible | No conflicts found |
| Moonlight Gourami | Compatible | No conflicts found |
| Oscar | Compatible | No conflicts found |
| Pearl Gourami | Compatible | No conflicts found |
| Peppered Cory | Compatible | No conflicts found |
| Pictus Catfish | Compatible | No conflicts found |
| Rainbow Shark | Compatible | No conflicts found |
| Ramshorn Snail | Compatible | No conflicts found |
| Red-Tail Shark | Compatible | No conflicts found |
| Rosy Barb | Compatible | No conflicts found |
| Scissortail Rasbora | Compatible | No conflicts found |
| Siamese Algae Eater | Compatible | No conflicts found |
| Sterbai Cory | Compatible | No conflicts found |
| Swordtail | Compatible | No conflicts found |
| Three-spot Gourami | Compatible | No conflicts found |
| Tinfoil Barb | Compatible | No conflicts found |
| Upside-down Catfish | Compatible | No conflicts found |
| Weather Loach | Compatible | No conflicts found |
| African Dwarf Frog | Caution | Dwarf Gourami can bully smaller, peaceful African Dwarf Frog. |
| Amano Shrimp | Caution | Dwarf Gourami may eat baby Amano Shrimp. Adults are usually safe, but expect fewer shrimplets. |
| Bamboo Shrimp | Caution | Dwarf Gourami may eat baby Bamboo Shrimp. Adults are usually safe, but expect fewer shrimplets. |
| Black Neon Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Black Neon Tetra. |
| Black Skirt Tetra | Caution | Black Skirt Tetra nips fins, and Dwarf Gourami has long fins. |
| Boesemani Rainbowfish | Caution | Dwarf Gourami and Boesemani Rainbowfish only share 81–81°F. That's a tight window. |
| Buenos Aires Tetra | Caution | Buenos Aires Tetra nips fins, and Dwarf Gourami has long fins. |
| Bumblebee Goby | Caution | Dwarf Gourami can bully smaller, peaceful Bumblebee Goby. |
| Cardinal Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Cardinal Tetra. |
| Celestial Pearl Danio | Caution | Dwarf Gourami grows 4× longer than Celestial Pearl Danio and may treat it as food.; Dwarf Gourami can bully smaller, peaceful Celestial Pearl Danio. |
| Cherry Barb | Caution | Dwarf Gourami can bully smaller, peaceful Cherry Barb. |
| Cherry Shrimp | Caution | Dwarf Gourami may eat baby Cherry Shrimp. Adults are usually safe, but expect fewer shrimplets. |
| Chili Rasbora | Caution | Dwarf Gourami grows 4× longer than Chili Rasbora and may treat it as food.; Dwarf Gourami can bully smaller, peaceful Chili Rasbora. |
| Clown Killifish | Caution | Dwarf Gourami can bully smaller, peaceful Clown Killifish. |
| Convict Cichlid | Caution | Convict Cichlid nips fins, and Dwarf Gourami has long fins. |
| Crystal Red Shrimp | Caution | Dwarf Gourami may eat baby Crystal Red Shrimp. Adults are usually safe, but expect fewer shrimplets. |
| Diamond Tetra | Caution | Diamond Tetra nips fins, and Dwarf Gourami has long fins. |
| Electric Yellow Lab | Caution | Electric Yellow Lab nips fins, and Dwarf Gourami has long fins.; Dwarf Gourami (pH 6–7.5) and Electric Yellow Lab (pH 7.7–8.6) prefer different pH. |
| Ember Tetra | Caution | Dwarf Gourami grows 4× longer than Ember Tetra and may treat it as food.; Dwarf Gourami can bully smaller, peaceful Ember Tetra. |
| Endler's Livebearer | Caution | Dwarf Gourami can bully smaller, peaceful Endler's Livebearer. |
| German Blue Ram | Caution | Dwarf Gourami and German Blue Ram only share 81–81°F. That's a tight window.; Dwarf Gourami can bully smaller, peaceful German Blue Ram. |
| Ghost Shrimp | Caution | Dwarf Gourami may eat baby Ghost Shrimp. Adults are usually safe, but expect fewer shrimplets.; Ghost Shrimp nips fins, and Dwarf Gourami has long fins. |
| Glowlight Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Glowlight Tetra. |
| Harlequin Rasbora | Caution | Dwarf Gourami can bully smaller, peaceful Harlequin Rasbora. |
| Head-and-tail-light Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Head-and-tail-light Tetra. |
| Honey Gourami | Caution | Dwarf Gourami can bully smaller, peaceful Honey Gourami. |
| Julii Cory | Caution | Dwarf Gourami can bully smaller, peaceful Julii Cory. |
| Lambchop Rasbora | Caution | Dwarf Gourami can bully smaller, peaceful Lambchop Rasbora. |
| Lemon Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Lemon Tetra. |
| Marbled Hatchetfish | Caution | Dwarf Gourami can bully smaller, peaceful Marbled Hatchetfish. |
| Mystery Snail | Caution | Dwarf Gourami (pH 6–7.5) and Mystery Snail (pH unknown) prefer different pH.; Dwarf Gourami (2–18 dGH) and Mystery Snail (unknown dGH) prefer different water hardness. |
| Neon Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Neon Tetra. |
| Nerite Snail | Caution | Dwarf Gourami (pH 6–7.5) and Nerite Snail (pH 8–8.4) prefer different pH. |
| Odessa Barb | Caution | Dwarf Gourami can bully smaller, peaceful Odessa Barb. |
| Otocinclus | Caution | Dwarf Gourami can bully smaller, peaceful Otocinclus. |
| Panda Cory | Caution | Dwarf Gourami can bully smaller, peaceful Panda Cory. |
| Paradise Fish | Caution | Dwarf Gourami and Paradise Fish only share 72–72°F. That's a tight window. |
| Pea Puffer | Caution | Pea Puffer nips fins, and Dwarf Gourami has long fins. |
| Pearl Danio | Caution | Dwarf Gourami can bully smaller, peaceful Pearl Danio. |
| Penguin Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Penguin Tetra.; Penguin Tetra nips fins, and Dwarf Gourami has long fins. |
| Platy | Caution | Dwarf Gourami can bully smaller, peaceful Platy. |
| Pristella Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Pristella Tetra. |
| Pygmy Cory | Caution | Dwarf Gourami can bully smaller, peaceful Pygmy Cory. |
| Rummy-nose Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Rummy-nose Tetra. |
| Serpae Tetra | Caution | Serpae Tetra nips fins, and Dwarf Gourami has long fins. |
| Silver Hatchetfish | Caution | Dwarf Gourami can bully smaller, peaceful Silver Hatchetfish. |
| Silver Tip Tetra | Caution | Dwarf Gourami can bully smaller, peaceful Silver Tip Tetra.; Silver Tip Tetra nips fins, and Dwarf Gourami has long fins. |
| Sparkling Gourami | Caution | Dwarf Gourami can bully smaller, peaceful Sparkling Gourami. |
| Tiger Barb | Caution | Tiger Barb nips fins, and Dwarf Gourami has long fins. |
| Variatus Platy | Caution | Dwarf Gourami can bully smaller, peaceful Variatus Platy. |
| White Cloud Mountain Minnow | Caution | Dwarf Gourami and White Cloud Mountain Minnow only share 72–72°F. That's a tight window.; Dwarf Gourami can bully smaller, peaceful White Cloud Mountain Minnow. |
| Yoyo Loach | Caution | Yoyo Loach nips fins, and Dwarf Gourami has long fins. |
| Zebra Danio | Caution | Dwarf Gourami can bully smaller, peaceful Zebra Danio.; Zebra Danio nips fins, and Dwarf Gourami has long fins. |
| Fancy Goldfish | Avoid | Dwarf Gourami (72–81°F) and Fancy Goldfish (50–70°F) need different temperatures. |
| Iridescent Shark | Avoid | Iridescent Shark eats small fish, and Dwarf Gourami only grows to about 4.2 in. |
Care notes
Needs: Calm, heavily planted, shaded tank with gentle flow. One male per tank. Quarantine new fish: dwarf gourami iridovirus (DGIV) is common in trade stock, infectious, untreatable and can spread to other species.
Group: Not a schooling fish. SF: best in a male-female pair; do not keep a group; two males is a recipe for disaster unless the tank is very large. group_min 1 = a single male (females are rarely sold); a pair needs at least the 60 cm tank.
Temperament: semi-aggressive toward other fish, aggressive toward its own kind. Lives in the top of the tank.
Common questions
How big does a Dwarf Gourami get?
About 4.2 inches (8.8 cm SL) as an adult, according to seriouslyfish.com.
What size tank does a Dwarf Gourami need?
At least 24 inches long and about 15 gallons. The smallest standard tank that meets that is a 20 gallon long.
How many Dwarf Gouramis should be kept together?
It can be kept on its own. Not a schooling fish. SF: best in a male-female pair; do not keep a group; two males is a recipe for disaster unless the tank is very large. group_min 1 = a single male (females are rarely sold); a pair needs at least the 60 cm tank.
What fish can live with a Dwarf Gourami?
Species that passed every check include Guppy, Pearl Gourami, Betta, Bolivian Ram, Kribensis, Angelfish.
Gear for a Dwarf Gourami setup
TankSmallest standard tank that meets its minimum: 20 gallon long (30 in long).Find on Amazon →HeaterAbout 100 W for 20 gallons, holding 72–81°F.Find on Amazon →SandSoft sand protects barbels and lets it sift.Find on Amazon →FoodA quality flake or micro-pellet as a staple.Find on Amazon →Test kitCheck ammonia, nitrite and pH. Cycle the tank before adding fish.Find on Amazon →
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Related guides
Sources
Values come from these pages, in our own words. Status: verified (independent spot-check). Last reviewed 2026-10-12.
- seriouslyfish.com /species/trichogaster-lalius/
- fishbase.se /summary/Trichogaster-lalius.html