Bettas & gouramis · Trichopodus trichopterus

Three spot gourami care guide

Also called: Three-spot gourami, Blue gourami, Gold gourami, Opaline gourami, Platinum gourami, Lavender gourami, Cosby gourami

The three spot gourami is a hardy 4–5 in (10–12 cm) gourami sold as blue, gold, opaline and platinum forms. It is easy to keep in a 29 gallon (110 L) or larger tank, but males can turn territorial, so pick sturdy tank mates.

Three spot gouramis need a tank of at least 29 gallons (110 L), and water at 24–28°C (75–82°F) with a pH of 6–8. They grow to about 12 cm (4.7 in) and are semi-aggressive.

Plan a tank with three spot gouramisSee all tank mates

Three spot gourami quick facts

Scientific nameTrichopodus trichopterus
FamilyOsphronemidae
OriginMekong basin and nearby lowlands of Southeast Asia (gold, opaline and platinum forms are captive-bred)
Adult size12 cm (4.7 in)
Minimum tank29 gallons (110 L), at least 90 cm (35 in) long
Temperature24–28°C (75–82°F)
pH6–8
Hardness (GH)5–19 dGH
Group sizeAlone (only one male)
TemperamentSemi-aggressive; males fight each other
Swims atTop
DietOmnivore
Care levelEasy
Lifespan4–6 years
Safe with shrimp?No, eats shrimp
Safe with plants?Yes
  • Long fins attract fin nippers.

Tank setup

Give one adult 29 gallons (110 L) or more, in a tank about 36 in (90 cm) long. Give it floating plants, tall stem plants and open swimming space in the middle. Keep the flow gentle, use smooth decor so the long feelers do not snag, and leave a gap under the lid for air.

How many three spot gouramis in a tank?

The smallest common tank that suits three spot gouramis is a 40 gallon. Here is roughly how many fit in each size when they are the only fish, based on adult size and waste output. Leave room if you want tank mates.

TankThree spot gouramis (alone)
3 gallonToo small
5 gallonToo small
10 gallonToo small
15 gallonToo small
20 gallonToo small
20 gallon longToo small
29 gallonToo small
40 gallonUp to 8
55 gallonUp to 11
75 gallonUp to 15
125 gallonUp to 25

Numbers are bioload limits only. Males fight, so keep one male unless the tank is large and well planned.

What you need for three spot gouramis

Sized for a 29 gallon tank, the smallest common size that suits three spot gouramis. For a different tank or a mix of fish, use the stocking calculator for a list sized to your plan.

Tank and equipment

Food and extras for three spot gouramis

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Water parameters

Keep it at 24–28 °C (75–82 °F), pH 6.0–8.0 and about 5–19 dGH. This is one of the hardiest gouramis and adapts to most tap water. Change 25–30% of the water every week and keep the tank out of direct sun.

Best tank mates for three spot gouramis

These popular species share three spot gouramis' water needs and temperament. See the full list of 40 good matches.

Avoid keeping three spot gouramis with

  • Betta fish: Betta fish tends to attack colourful, long-finned fish like three spot gouramis, mistaking them for rivals.
  • Cherry shrimp: Three spot gourami eats small shrimp like cherry shrimp.
  • Common goldfish: They need different temperatures: Three spot gourami 24–28°C (75–82°F), common goldfish 15–22°C (59–72°F).
  • Fancy goldfish: They need different temperatures: Three spot gourami 24–28°C (75–82°F), fancy goldfish 18–23°C (64–73°F).
  • Tiger barb: Tiger barb is a well-known fin nipper and will shred the long fins of three spot gouramis.
  • Dojo loach: They need different temperatures: Three spot gourami 24–28°C (75–82°F), dojo loach 18–23°C (64–73°F).

Feeding

It is an easy omnivore. Build the diet on flakes or small pellets, with frozen bloodworm, brine shrimp or daphnia two or three times a week. Spirulina flake or blanched zucchini adds greens, and it also grazes algae.

Behavior

Temperament varies a lot. Many stay calm, but some males become bullies as they mature, especially toward other gouramis and bettas. Males fight each other, so keep one per tank unless it is large and well planted. It may nip slow, long-finned fish. Good mates are sturdy fish of a similar size, such as black skirt tetras, black ruby barbs, yoyo or zebra loaches, bristlenose plecos and medium catfish.

Breeding

Males grow a little larger and have a long, pointed dorsal fin; females have a shorter, rounded dorsal fin and a fuller belly. The male builds a bubble nest among floating plants and can be rough with the female, so give her plenty of cover. In a separate tank, remove the female after spawning and the male once the fry swim, about 4–5 days later. Feed infusoria first, then baby brine shrimp.

Tips from experienced keepers

  • Blue, gold, opaline, platinum and lavender gouramis are all this one species, so their care and temper are the same.
  • Watch a new gourami closely for the first weeks, and have a plan to rehome it if it starts bullying.
  • Floating plants and sight breaks give other fish a way to escape a pushy male.
  • Do not keep it with dwarf shrimp; it hunts them.

Frequently asked questions

Are blue gouramis aggressive?

They are semi-aggressive. Many live peacefully in a community, but some males become territorial with age and bully smaller or similar-looking fish, especially other gouramis.

What size tank does a three spot gourami need?

At least 29 gallons (110 L) for one adult, in a tank about 36 in (90 cm) long. More than one gourami, or a busy community, needs a bigger tank.

Can three spot gouramis live with bettas?

It is not recommended. Both are territorial labyrinth fish that use the surface, and the larger gourami can harass or injure a betta.

Sources

We checked these references when writing this page. Values are for healthy long-term keeping, not survival limits. Last reviewed 2026-10-13. See our editorial policy.