{"product_id":"freshwater-pom-pom-crab-ptychognathus-barbatus","title":"Freshwater Pom Pom Crab (Ptychognathus barbatus)","description":"\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e\u003cstrong\u003e⚠️ \u003cstrong\u003eImportant Legal Note:\u003c\/strong\u003e All aquatic invertebrates are\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e prohibited to possess in any form or sell in the state of\u003c\/span\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e \u003cstrong\u003eMaine\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003e Please check your local regulations before purchasing. We are unable to ship livestock from this listing to Maine. If you reside in Maine and try to checkout with this in your cart you will be unable to checkout and receive an error message until it is removed from the cart.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e  \u003c\/p\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eSpecies Description\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp\u003eThe Pom Pom Crab is a tiny, fully aquatic crab best known for the distinctive tufts of fine setae covering portions of its claws. These fuzzy “pom-poms” give the crab its common name, but they are more than decoration. The crab uses them while feeding and foraging, collecting fine food particles and organic material as it explores its surroundings.\u003c\/p\u003e\n\u003cp\u003ePom Pom Crabs spend much of their time moving across substrate, plants, rocks, driftwood, and other surfaces in search of food. Their small size and constant activity make them especially interesting in a mature, structured aquarium where biofilm, microorganisms, and other natural foods have had time to develop. They are fully aquatic and do not require a terrestrial or above-water area.\u003c\/p\u003e\n\u003cp\u003eAquarium-trade Pom Pom Crabs have traditionally been identified as \u003cem\u003e\u003cstrong\u003ePtychognathus barbatus\u003c\/strong\u003e\u003c\/em\u003e. More recent taxonomic research has shown that identification within this genus is considerably more complicated than previously understood, with some populations historically identified as \u003cem\u003eP. barbatus\u003c\/em\u003e now recognized as different species. For this reason, Aquatic Arts uses \u003cstrong\u003e\u003cem\u003ePtychognathus\u003c\/em\u003e cf. \u003cem\u003ebarbatus\u003c\/em\u003e\u003c\/strong\u003e as a more cautious identification for the aquarium-trade animals we offer unless their exact species identity can be independently confirmed.\u003c\/p\u003e\n\u003cp\u003eTheir natural habitat also deserves some clarification. \u003cem\u003ePtychognathus\u003c\/em\u003e crabs are strongly associated with freshwater-influenced estuarine and brackish environments, although freshwater occurrence has also been reported. Aquatic Arts has successfully maintained the Pom Pom Crabs we receive fully submerged in freshwater, but that experience alone does not establish freshwater as the optimal environment throughout the animal's entire lifespan.\u003c\/p\u003e\n\u003cp\u003eFor aquarists seeking the more conservative long-term approach, we recommend \u003cstrong\u003estable, low-end brackish conditions\u003c\/strong\u003e while the long-term salinity requirements and exact identity of aquarium-trade Pom Pom Crabs remain uncertain. We would rather be transparent about that uncertainty than present these animals as strictly freshwater crabs when the available information does not justify such a definitive claim.\u003c\/p\u003e\n\u003ch3\u003eStandard Grade \u0026amp; B-Grade Pom Pom Crabs\u003c\/h3\u003e\n\u003cp\u003eAquatic Arts may offer both \u003cstrong\u003eStandard Grade and B-Grade Pom Pom Crabs\u003c\/strong\u003e, depending on availability.\u003c\/p\u003e\n\u003cp\u003eOur B-Grade crabs are animals that we consider healthy and viable but that do not meet our normal cosmetic standards for the standard grade. This is most commonly due to a missing or damaged leg or claw or another visible physical imperfection.\u003c\/p\u003e\n\u003cp\u003eCrabs can regenerate lost appendages through subsequent molts, although regeneration takes time and may require multiple molts. Because the rate of regeneration varies from crab to crab, we cannot guarantee when or how completely an appendage will return.\u003c\/p\u003e\n\u003cp\u003eB-Grade crabs are offered at a reduced price because of their appearance at the time of sale. \u003cstrong\u003eB-Grade does not mean that we knowingly sell sick or unhealthy animals.\u003c\/strong\u003e\u003c\/p\u003e\n\u0026lt;\u0026gt;\n\u003ch2\u003eWhat We Love About This Crab\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnmistakable fuzzy “pom-pom” claws\u003c\/strong\u003e make their feeding and foraging behavior fascinating to observe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiny adult size\u003c\/strong\u003e allows them to explore plants, wood, rocks, and intricate areas of a mature aquascape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstant natural foraging behavior\u003c\/strong\u003e makes them particularly interesting in established aquariums rich in biofilm and natural surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully aquatic lifestyle\u003c\/strong\u003e means they can be maintained without constructing a terrestrial section.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u0026lt;\u0026gt;\n\u003ch1\u003eQuick Care Guide\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eScientific Name:\u003c\/strong\u003e \u003cem\u003ePtychognathus\u003c\/em\u003e cf. \u003cem\u003ebarbatus\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eCommon Name:\u003c\/strong\u003e Pom Pom Crab\u003cbr\u003e\u003cstrong\u003eFamily:\u003c\/strong\u003e Varunidae\u003cbr\u003e\u003cstrong\u003eCare Level:\u003c\/strong\u003e Intermediate\u003cbr\u003e\u003cstrong\u003eAdult Size:\u003c\/strong\u003e Approximately 1 inch across the carapace\u003cbr\u003e\u003cstrong\u003eTemperament:\u003c\/strong\u003e Generally peaceful but opportunistic\u003cbr\u003e\u003cstrong\u003eLifestyle:\u003c\/strong\u003e Fully aquatic\u003cbr\u003e\u003cstrong\u003eLand Area Required:\u003c\/strong\u003e No\u003cbr\u003e\u003cstrong\u003eMinimum Aquarium Size:\u003c\/strong\u003e 5 gallons or larger; additional space recommended for groups\u003cbr\u003e\u003cstrong\u003eTemperature:\u003c\/strong\u003e Approximately 72–78°F (22–26°C)\u003cbr\u003e\u003cstrong\u003eDiet:\u003c\/strong\u003e Omnivorous; biofilm, fine organic material, algae, small meaty foods, and quality prepared foods\u003cbr\u003e\u003cstrong\u003eWater Movement:\u003c\/strong\u003e Gentle to moderate with good oxygenation\u003cbr\u003e\u003cstrong\u003eAquarium:\u003c\/strong\u003e Mature aquarium with abundant structure, hiding areas, and natural surfaces\u003cbr\u003e\u003cstrong\u003ePlants:\u003c\/strong\u003e Recommended\u003cbr\u003e\u003cstrong\u003eSecure Lid:\u003c\/strong\u003e Strongly recommended\u003cbr\u003e\u003cstrong\u003eSalinity:\u003c\/strong\u003e Freshwater occurrence and successful freshwater maintenance have been documented, including in Aquatic Arts' own systems. However, because \u003cem\u003ePtychognathus\u003c\/em\u003e is strongly associated with freshwater-influenced estuarine and brackish habitats, Aquatic Arts recommends \u003cstrong\u003estable low-end brackish conditions as the more conservative long-term approach\u003c\/strong\u003e.\u003c\/p\u003e\n\u0026lt;\u0026gt;\n\u003ch1\u003eWater Parameters\u003c\/h1\u003e\n\u003ch2\u003eIs the Pom Pom Crab Freshwater or Brackish?\u003c\/h2\u003e\n\u003cp\u003eThis question deserves more explanation than a simple “freshwater” or “brackish” label.\u003c\/p\u003e\n\u003cp\u003eMembers of \u003cem\u003ePtychognathus\u003c\/em\u003e are strongly associated with coastal, estuarine, and other environments influenced by both freshwater and saltwater. Freshwater occurrence has also been reported, and Aquatic Arts has maintained the Pom Pom Crabs we receive in fully aquatic freshwater systems.\u003c\/p\u003e\n\u003cp\u003eWhat we cannot currently establish is that permanent freshwater conditions are optimal throughout the entire lifespan of every Pom Pom Crab entering the aquarium trade. We also have not found reliable evidence supporting claims that these crabs can survive only a particular number of weeks or months in freshwater.\u003c\/p\u003e\n\u003cp\u003eBecause of that uncertainty, \u003cstrong\u003eAquatic Arts recommends low-end brackish conditions as the more conservative choice for long-term husbandry.\u003c\/strong\u003e This recommendation reflects what is known about the natural environments associated with the genus without making unsupported claims about how long an individual crab will survive under a particular salinity.\u003c\/p\u003e\n\u003ch3\u003eSalinity\u003c\/h3\u003e\n\u003cp\u003eIf you choose to maintain your Pom Pom Crab under brackish conditions, use a \u003cstrong\u003emarine aquarium salt mix\u003c\/strong\u003e rather than freshwater “aquarium salt,” table salt, or another sodium-chloride-only product. Brackish water should be prepared and measured rather than created by adding an arbitrary amount of salt directly to the aquarium.\u003c\/p\u003e\n\u003cp\u003eWe are intentionally \u003cstrong\u003enot publishing a narrow specific-gravity requirement at this time\u003c\/strong\u003e. The exact identity of aquarium-trade Pom Pom Crabs and their optimal long-term salinity remain uncertain, and we do not want to turn a generalized recommendation from another species or population into a precise requirement for these animals without sufficient evidence.\u003c\/p\u003e\n\u003cp\u003eWhatever conditions are chosen, prioritize stability. Avoid repeatedly moving the crab between freshwater and brackish conditions or making sudden changes in salinity.\u003c\/p\u003e\n\u003ch3\u003eTemperature\u003c\/h3\u003e\n\u003cp\u003eMaintain a stable temperature of approximately \u003cstrong\u003e72–78°F (22–26°C)\u003c\/strong\u003e. Good oxygenation and consistent water quality are more important than attempting to maintain the aquarium at one exact temperature within this range.\u003c\/p\u003e\n\u003ch3\u003epH and Hardness\u003c\/h3\u003e\n\u003cp\u003eAvoid extremely soft, acidic conditions. Like other crustaceans, Pom Pom Crabs depend on adequate dissolved minerals to support normal exoskeleton development and successful molting.\u003c\/p\u003e\n\u003cp\u003eRather than chasing a single exact pH, provide \u003cstrong\u003estable, appropriately mineralized water with measurable hardness and alkalinity\u003c\/strong\u003e. Any changes to hardness, pH, or salinity should be made gradually.\u003c\/p\u003e\n\u0026lt;\u0026gt;\n\u003ch2\u003eAquatic Arts Husbandry Note\u003c\/h2\u003e\n\u003cp\u003eWe maintain the Pom Pom Crabs we receive in \u003cstrong\u003efully aquatic freshwater systems\u003c\/strong\u003e, and we believe our direct experience with these animals is important information for customers.\u003c\/p\u003e\n\u003cp\u003eAt the same time, successful maintenance in our holding and conditioning systems does not prove that freshwater provides optimal conditions throughout the animal's entire natural lifespan. Current habitat and taxonomic information surrounding \u003cem\u003ePtychognathus\u003c\/em\u003e warrants a more cautious long-term recommendation.\u003c\/p\u003e\n\u003cp\u003eThe freshwater-versus-brackish discussion should also not be confused with whether these crabs require access to land. \u003cstrong\u003ePom Pom Crabs are fully aquatic and do not require a terrestrial area.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Aquatic Arts","offers":[{"title":"1 Crab","offer_id":49069527105689,"sku":"ayz1790041456737","price":11.39,"currency_code":"USD","in_stock":true},{"title":"2 Crabs","offer_id":49069527138457,"sku":"iuk1790041456738","price":28.85,"currency_code":"USD","in_stock":true},{"title":"3 Crabs","offer_id":49069527171225,"sku":"yjq1790041456739","price":37.39,"currency_code":"USD","in_stock":true},{"title":"5 Crabs","offer_id":49069527203993,"sku":"pfl1790041456740","price":48.35,"currency_code":"USD","in_stock":true},{"title":"6 Crabs","offer_id":49069527236761,"sku":"hgq1790041456741","price":59.83,"currency_code":"USD","in_stock":true},{"title":"10 Crabs","offer_id":49069527269529,"sku":"lwj1790041456742","price":103.59,"currency_code":"USD","in_stock":true},{"title":"1 B-Grade Crab","offer_id":49069527302297,"sku":"dxg1790041456743","price":9.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/5995\/9961\/files\/freshwater-pom-pom-crab-ptychognathus-barbatus_1.jpg?v=1790041483","url":"https:\/\/sweatcladk.shop\/products\/freshwater-pom-pom-crab-ptychognathus-barbatus","provider":"My Store","version":"1.0","type":"link"}