thai micro crabs
Aquatic Arts Thai Micro Crabs for sale
Aquatic Arts Thai Micro Crabs for sale
Aquatic Arts Thai Micro Crabs for sale
Aquatic Arts Thai Micro Crabs for sale
Aquatic Arts Thai Micro Crabs for sale
Aquatic Arts Thai Micro Crabs for sale
Thai Micro Crabs (Limnopilos naiyanetri)

Thai Micro Crabs (Limnopilos naiyanetri)

Regular price$ 29.99
Choose a Pack:
  • Low stock - 9 items left
  • Inventory on the way


Due to their small size, these crabs pose little or no threat to most fish or other aquarium inhabitants; however, aggressive fish or animals may come after the micro crabs.


We now also offer a Thai Micro Crab + Marimo Ball Combo! These crabs love to hang out on Marimo balls and now you can save on marimo when you combo them with your crabs!

Thai Micro Crabs are also known as "false spider crabs," and their scientific name is Limnopilos naiyanetr.  These are tiny, fully aquatic crabs that so far have only been found in one specific river in Thailand.  They are a very new and rare addition to the aquarium hobby, making them extremely difficult to find in pet stores or even online.  This is one of the very few types of crab that can live fully immersed in water at all times, so they are able to be kept in any freshwater aquarium. 

These crabs resemble spiders in their appearance because of their unusually long legs relative to their bodies.  They are usually a silvery color with light brown or beige legs.  

NOTE: These crabs are EXTREMELY small (hence the "micro" adjective in their name), so we recommend them for experienced nano-aquarists and shrimp hobbyists ONLY.
Thai Micro Crabs don't grow any larger than 1/2 inch in diameter (including their leg-span), making them great for small tanks and nano tanks. They often act shy when first introduced to a new tank, but eventually will be found clinging to plants and decor and perching atop driftwood. They prefer to have plenty of hiding places, such as caves and plant cover. The way they eat is similar to Singapore Flower Shrimp or Bamboo Shrimp - they filter particles out of the water using tiny hairs on their claws. They can also scavenge and on rare occasion hunt prey like most crab species. They have been very safe to keep with small invertebrates in our experience but we have had very few reports of them getting a hold of a dwarf shrimp on rare occasion. Like with any crab or crayfish, the golden rule is that if they can catch it they may try to eat it. Crabs and crayfish alike are omnivorous opportunity scavengers and hunters. Thai Micro Crabs will rarely hunt as they mostly filter feed, but because they are a crab some caution is always advised. Again, from our experience they have showed little to no interest in shrimp or other small inverts and fish, but due to the nature of all crabs some caution is advised.

What We Like About This Crab:
  • Beautiful spotted pattern
  • More peaceful alternative to crayfish
  • Lively personality
  • One of the few fully aquatic crabs available

  • Temperature: 72° - 82° F (22° - 28° C)
  • pH: 6.5 - 8.0
  • KH: 6 - 15 dKH
  • Minimum tank size: 2 gallons

  • Diet: Scavengers.  Requires very little feeding in a well-established aquarium containing algae, biofilm, or decaying plant matter.  In less mature aquariums, high quality dry foods with high plant content can be fed daily
  • Social behavior: Completely peaceful
  • Origin: Thailand
  • Average adult size: 1/2 inch (1.3 cm) in diameter
  • Average purchase size: 1/4 - 1/2 inch (.64 - 1.3 cm) in diameter


All Aquatic Arts brand plants and animals come with a 100% live arrival guarantee, plus free email support!


For the safety of our animals, we only ship live fish, crabs, and select other inverts exclusively via UPS 1 Day Air.  If your order contains this item, you will only see UPS 1 Day Air as a shipping option during checkout. If other items are in your cart that can ship with  2 day or standard shipping options the only shipping method you can still select is UPS 1 Day Air. 

UPS 1 Day is a description of the duration of time a shipment will spend in transit once it has been shipped. This does not guarantee the package will be shipped the same or next day from which the order was placed.

Shipping Schedule for this service

UPS 1 Day: Monday through Thursday

Current Handling Time:

1-9 business days

Here at Aquatic Arts, we consider the welfare of the live animals we are shipping to be of the foremost importance. This process is much more involved than simply creating a shipping label and affixing it to a box. Depending on the order, it takes from 4 to 7 people to complete this process properly. We check the weather conditions here where they fly out of the Indianapolis UPS facility and the destination for each shipment. We start early each morning and go through a multi-step process to have the day's shipments prepared in time for the UPS pickup. The volume of orders in our system also affects the processing time. Therefore our stated handling time is 1-9 business days. 

Shipping Rate

Pricing is by size of package needed to fill entire order and distance it must travel. It will be calculated at checkout.



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