IMPORTANT: Thai Micro Crabs (Limnopilos naiyanetri) are EXTREMELY SMALL (½ inch diameter) and for experienced nano aquarists only! They’re perfect for a 2 gal or larger aquarium!Also known as “false spider crabs,” these are fully aquatic crabs, so they can always stay immersed in water and don’t need to float! Perfect for nano glass or acrylic aquariums!They eat biofilm, so they require little feeding in a mature tank. Supplement their diet with quality dry foods, Indian almond leaves, etc. Water conditioner or UV sterilizer recommended!Basic tank supplies needed, e.g. filter (terra filter, purigen filter, power filter, hang on back filter), pump (wave, vacuum, or mag pump), heaters or heating element, LED lightbulb or lamp, etc.All Aquatic Arts (formerly InvertObsession) brand plants and animals come with a 100% live arrival guarantee, plus free email support!