What is the absolute minimum tank size for a Sparkling gourami?

10 US gallons as an adult, no strict footprint requirement. Seriously Fish profile.

Can I keep a Sparkling gourami in a smaller tank when it's a juvenile?

Briefly, yes — fish stores often sell juveniles that haven't reached adult size yet. But you should plan, buy, and cycle the adult-minimum tank from day one. Upgrading mid-life stresses the fish and is far more expensive than buying the right tank up front.

Can I keep more than one Sparkling gourami together?

It depends on the species' behaviour (peaceful). Sparkling gourami can usually be kept in small groups in an appropriately sized tank.

What temperature and pH does a Sparkling gourami need?

Temperature 76–82 °F, pH 6–7.5.

Tank size · Freshwater

What size tank for a Sparkling gourami? (10 gal minimum)

Sparkling gourami (Trichopsis pumila) — adult 1.5″, slim-bodied, peaceful.

The three sizes — minimum, good, ideal

Tier	Tank size	What it gets you
Absolute minimum	10 US gal	Survives adult life. No extras — no tankmates beyond the essentials, no aquascape that eats footprint.
Good	15 US gal	Room for a small community, decor, and parameter buffering. This is where most people should aim.
Ideal	25 US gal	Natural-feeling space. Active swimmers stop pacing, schoolers school freely, aggression drops.

Parameters at a glance

Temperature: 76–82 °F
pH: 6–7.5
Adult size: 1.5″
Body type: slim

Source for the tank-size minimum

Seriously Fish profile.

Next steps

▸ Build a candidate stocking list with the aquarium stocking calculator — it'll warn if your community is incompatible.
▸ Confirm tank water volume after substrate and rock with the aquarium volume calculator.
▸ Read the nitrogen-cycle guide before adding the first fish.