Thai Micro Crab

Limnopilos naiyanetri

Thai Micro Crab (Limnopilos naiyanetri) — Easy care, Peaceful, under Other. Minimum tank in the app: 5.3 US gal min; aim for 72–82°F and pH 6.5–8. The Thai Micro Crab is an ideal choice for nano tanks and aquarists seeking a unique scavenger to enhance bottom-level activity.

Thai Micro Crab (Limnopilos naiyanetri) in a planted freshwater aquarium
Care levelEasy
TemperamentPeaceful
Min tank size5.3 US gal min
pH range6.5–8
Temperature72–82°F
Max size1.0 in (2.5 cm)
Captive lifespan1–2 years
SchoolingNo

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Various

We don’t shade a region on this simplified map—your text may be Europe-only, worldwide, listed as “Various,” captive-only, or outside the five areas used in the stocking calculator. That tool still scores whether your fish come from similar parts of the world.

Regional colours match the stocking calculator’s origin map.

Thai Micro Crab Tank Setup

Create a stimulating environment with plenty of hiding spots using rocks, driftwood, or plants while ensuring open spaces for movement. Maintain gentle water flow, use a fine substrate to accommodate their scavenging needs, and consider subdued lighting to mimic their natural habitat, which promotes comfort and reduces stress.

What Do Thai Micro Crabs Eat?

Feeding should be slow and deliberate to prevent competition, which can stress these crabs. A varied diet rich in detritus, algae, and finely crushed flakes or pellets is essential for health and coloration, ensuring they receive adequate nutrition without overwhelming them during feeding periods.

Thai Micro Crab Tank Mates

Best suited with small, non-aggressive species that occupy different vertical zones to minimize competition. Avoid larger or more boisterous fish that may intimidate or outcompete them. With no shoaling instinct, maintain a minimum group size of three to foster social behavior without overcrowding risks.

Are Thai Micro Crabs Good for Beginners?

In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the need for a finely textured substrate and ample cover, leading to stress and decreased foraging behavior. introducing these crabs into unstable water parameters can lead to health issues, given their sensitivity to environmental changes.

Building a community? Run the full list through the stocking calculator before you add anything else.

Log tests and reminders in App-aquatic—free, same data you see here.