What size tank does a Lambchop Rasbora need?

Lambchop Rasbora needs a minimum of 5 gallons, with 8 gallons recommended. They are middle swimmers. Keep in groups of 8+.

Is Lambchop Rasbora good for beginners?

Lambchop Rasbora is rated "beginner" difficulty (1/5). Great for beginners.

What fish are compatible with Lambchop Rasbora?

Lambchop Rasbora is peaceful. Compatible tank mates include other peaceful fish with similar water parameters (pH 5.5-7, temp 73-82°F).

Lambchop Rasbora

Trigonostigma espei

Family: Cyprinidae • Origin: Various

Lambchop Rasbora (Trigonostigma espei) is a peaceful barb reaching 1.5 inches. Keep in groups of 8+. Minimum tank size: 5 gallons.

Min Tank

5 gal

Max Size

1.5"

Temperature

73-82°F

5.5-7

Lifespan

2 years

School Size

Swim Level

middle

Hardness

5-15 dGH

peacefulbeginneromnivoreschooling

Is Lambchop Rasbora Right for Your Tank?

Lambchop Rasbora is an excellent choice for beginners — rated "beginner" difficulty (1/5). They're hardy, forgiving of minor water parameter fluctuations, and generally easy to feed. At just 5 gallons minimum, they work well in nano tanks and smaller setups.

With a peaceful temperament, Lambchop Rasbora makes a great community fish. They coexist well with other non-aggressive species of similar size. This is a schooling species — keep at least 8 together, or they may become stressed and display abnormal behavior. Expected lifespan: 2 years with proper care.

Common Mistakes with Lambchop Rasbora

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Keeping fewer than 8 together

Lambchop Rasbora is a schooling species — they need a group of at least 8 to feel secure. Lone or paired individuals become stressed, hide constantly, and may develop health issues or aggression.

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Relying on a heater without a thermometer

Lambchop Rasbora needs 73–82°F. Heaters malfunction or drift over time — always use a separate thermometer to verify. Temperature swings of even 3–4°F can trigger stress and disease, particularly ich.

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Putting them in a tank under 5 gallons

While 5 gallons is the minimum, nano tanks require more frequent water changes and leave less room for error. A slightly larger tank (8 gal) is much more forgiving.