What size tank does a Thai Micro Crab need?

Thai Micro Crab needs a minimum of 5 gallons, with 8 gallons recommended. They are bottom swimmers. Keep in groups of 3+.

Is Thai Micro Crab good for beginners?

Thai Micro Crab is rated "advanced" difficulty (3/5). Suitable for intermediate fishkeepers.

What fish are compatible with Thai Micro Crab?

Thai Micro Crab is peaceful. Compatible tank mates include other peaceful fish with similar water parameters (pH 6.5-7.5, temp 72-82°F).

Thai Micro Crab

Limnopilos naiyanetri

Family: Hymenosomatidae • Origin: Various

Thai Micro Crab (Limnopilos naiyanetri) is a peaceful other reaching 0.4 inches. Keep in groups of 3+. Minimum tank: 5 gallons.

Min Tank

5 gal

Max Size

0.4"

Temperature

72-82°F

6.5-7.5

Lifespan

1 years

School Size

Swim Level

bottom

Hardness

5-15 dGH

peacefuladvancedomnivoreschooling

Is Thai Micro Crab Right for Your Tank?

Thai Micro Crab is a moderate-care fish rated "advanced" (3/5). Suitable for hobbyists with some experience who can maintain stable water parameters. At just 5 gallons minimum, they work well in nano tanks and smaller setups.

With a peaceful temperament, Thai Micro Crab makes a great community fish. They coexist well with other non-aggressive species of similar size. This is a schooling species — keep at least 3 together, or they may become stressed and display abnormal behavior. Expected lifespan: 1 years with proper care.

Common Mistakes with Thai Micro Crab

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Keeping fewer than 3 together

Thai Micro Crab is a schooling species — they need a group of at least 3 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

Thai Micro Crab needs 72–82°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.