{"product_id":"red-claw-crab-perisesarma-bidens","title":"Red Claw Crab (Perisesarma bidens)","description":"\u003cp\u003eThe Red Claw Crab (\u003ci\u003ePerisesarma bidens\u003c\/i\u003e) is an exceptionally charismatic and fascinating semi-aquatic crustacean known for its vibrant purple-to-brown body and striking, contrasting red claws. Highly active and full of personality, they provide an engaging display for hobbyists looking to venture beyond standard fully aquatic fish setups.\u003c\/p\u003e\n\u003cp\u003e\u003ci\u003eNote for Beginner Aquarists:\u003c\/i\u003e Unlike typical freshwater crabs or shrimp, \u003ci\u003ePerisesarma bidens\u003c\/i\u003e is a \u003cb\u003esemi-aquatic brackish species\u003c\/b\u003e that requires a specialized \u003cb\u003epaludarium\u003c\/b\u003e layout (a hybrid habitat featuring both a land area and a shallow water section). Keeping them in a traditional, fully freshwater and submerged aquarium will lead to health decline.\u003c\/p\u003e\n\u003ch3\u003eShort Description \u0026amp; Highlights\u003c\/h3\u003e\n\u003cp\u003e\u003ci\u003ePerisesarma bidens\u003c\/i\u003e features a compact dark carapace coupled with eye-catching crimson claws that make it a standout addition. Reaching a modest span of about 3 to 4 inches, it spends a significant portion of its time exploring shorelines, climbing structures, and foraging on land. Beginners will find them hardy and rewarding if proper low-end brackish conditions and secure, escape-proof land platforms are provided.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Product Highlights:\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eScientific Name\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003ci\u003ePerisesarma bidens\u003c\/i\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCommon Names\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRed Claw Crab, Thai Crab, Miniature Crab\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eTank Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePaludarium (Mandatory land and water split; minimum 10–15 gallons)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCare Level\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIntermediate (Manageable for dedicated beginners willing to monitor salinity)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eTemperament\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSemi-aggressive \/ Territorial with conspecifics; opportunistic\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eMax Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3 to 4 inches (7 to 10 cm leg span)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eWater Parameters\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTemp: 75°F–82°F (24°C–28°C) | pH: 7.5–8.5\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eSalinity\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLow-end brackish (Specific Gravity: 1.003–1.010)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDetailed Beginner Care Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003e1. Habitat Setup (The Paludarium)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eTo thrive, these crabs require an enclosure with roughly 60% to 70% dry land and 30% shallow brackish water (or at a minimum a balanced 50\/50 split). Use aquarium-safe marine salt mix to achieve a low-end brackish specific gravity. Because they are legendary escape artists, a tight-fitting aquarium lid or cover is strictly required to prevent them from scaling filter tubes or glass corners.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2. Diet \u0026amp; Nutrition\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eRed claw crabs are opportunistic omnivores and scavengers. Their diet should consist of sinking shrimp pellets, algae wafers, bloodworms, and blanched vegetables (such as zucchini or spinach). Crucially, they require a supplemental source of calcium—such as a piece of cuttlebone placed on the land area—to ensure they can successfully harden their shells following the moulting process.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e3. Behavior \u0026amp; Tank Mates\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThese creatures are primarily nocturnal, spending daylight hours hidden inside cave structures, driftwood crevices, or burrows before becoming active at night. Due to their predatory nature and brackish requirements, they are best housed alone, in pairs, or in small groups with ample territory. They are generally incompatible with fully aquatic community fish or delicate live aquarium plants, which they will readily clip uproot, or consume.\u003c\/p\u003e","brand":"Crab","offers":[{"title":"Default Title","offer_id":57208910020948,"sku":"55923","price":6.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1052\/5828\/7444\/files\/RedClawCrab_Perisesarmabidens.webp?v=1789817889","url":"https:\/\/www.tropicalmarineaquatic.com\/products\/red-claw-crab-perisesarma-bidens","provider":"Tropical Marine Aquatic","version":"1.0","type":"link"}