{"product_id":"van-heurns-rainbow","title":"Van Heurn's Rainbow","description":"\u003ch2 style=\"font-family: Georgia, serif; font-size: 1.4em; font-weight: normal; letter-spacing: 0.08em; color: #0a2a3a; border-bottom: 2px solid #3a7ca5; padding-bottom: 8px; margin-bottom: 18px; text-transform: uppercase;\"\u003eVan Heurn’s Rainbow\u003c\/h2\u003e\u003cp style=\"font-family: Georgia, serif; font-size: 1.05em; line-height: 1.8; margin-bottom: 16px; color: #2c2c2c;\"\u003e\u003cstrong\u003eVan Heurn’s Rainbow\u003c\/strong\u003e (\u003cem\u003eMelanotaenia vanheurni\u003c\/em\u003e) is an attractive and uncommonly available rainbowfish from the Bird's Head Peninsula of West Papua. Males develop a warm golden-orange body with iridescent highlights and the characteristic dorsal ridge flash that rainbowfish are famous for. Named for Dutch naturalist and collector W.C. van Heurn.\u003c\/p\u003e\u003cp style=\"font-family: Georgia, serif; font-size: 1.05em; line-height: 1.8; margin-bottom: 16px; background-color: #e0f0f8; border: 1px solid #b0d0e8; padding: 14px 18px; color: #0a2a3a;\"\u003e\u003cstrong\u003eFeeding \u0026amp; Care Tip:\u003c\/strong\u003e \u003cstrong\u003eSera Vipan Tropical Flakes\u003c\/strong\u003e and \u003cstrong\u003eHikari Micro Pellets\u003c\/strong\u003e make excellent daily staples. Supplement 2–3× per week with \u003cstrong\u003eHikari Frozen or Freeze-Dried Bloodworms\u003c\/strong\u003e. Crush flakes for juveniles; soak pellets.\u003c\/p\u003e\u003cp style=\"font-family: Georgia, serif; font-size: 1.05em; line-height: 1.8; margin-bottom: 16px; color: #2c2c2c;\"\u003eNative to the Bird's Head Peninsula of West Papua, Indonesia. Inhabits slow to moderate flowing streams and river margins. Care requirements follow standard rainbowfish guidelines — slightly hard, neutral to slightly alkaline water with good filtration.\u003c\/p\u003e\u003cp style=\"font-family: Georgia, serif; font-size: 1.05em; line-height: 1.8; margin-bottom: 16px; color: #2c2c2c;\"\u003eKeep in groups of at least six with mixed sexes. Completely peaceful with other medium to large community fish. Its relative rarity in the hobby adds collector interest beyond its attractive coloration.\u003c\/p\u003e\u003cp style=\"font-family: Georgia, serif; font-size: 1.05em; line-height: 1.8; margin-bottom: 24px; color: #2c2c2c;\"\u003eA well-planted aquarium with open swimming space in the center replicates the rainbowfish's natural riverine habitat. These are active, fast-swimming fish that appreciate length more than height — a longer tank allows them to build up speed and display properly. Good filtration and regular partial water changes are important, as rainbowfish are sensitive to deteriorating water quality. Avoid very small or slow-moving tankmates that may be outcompeted at feeding time.\u003c\/p\u003e\u003ch3 style=\"font-family: Georgia, serif; font-size: 1.05em; font-weight: normal; letter-spacing: 0.1em; text-transform: uppercase; color: #0a2a3a; border-top: 1px solid #b0d0e8; padding-top: 18px; margin-bottom: 14px;\"\u003eCare \u0026amp; Ideal Parameters\u003c\/h3\u003e\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, sans-serif; font-size: 0.92em;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eDifficulty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003eEasy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eTemperament\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003ePeaceful — Community\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eTypical Adult Size\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003e4.0 inches (10 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eMin. Group Size\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003e6 minimum — mixed sexes for best male display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eIdeal Temp\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003e72–82°F (22–28°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eIdeal pH\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003e7.0–8.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eIdeal GH\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003e8–20 dGH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eIdeal KH\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003e4–10 dKH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eStaple Food\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003eSera Vipan Tropical Flakes; Hikari Micro Pellets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eTreat \/ Supplement\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003eHikari Frozen or Freeze-Dried Bloodworms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #e0f0f8; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003eBird's Head Peninsula, West Papua, Indonesia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #0a2a3a; font-weight: 600; width: 38%; border: 1px solid #b0d0e8; vertical-align: top;\"\u003eNotes\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; background-color: #ffffff; color: #2c2c2c; border: 1px solid #b0d0e8;\"\u003eNamed for Dutch naturalist W.C. van Heurn. Uncommonly available. Warm golden-orange male coloration. Slightly hard neutral to alkaline water preferred.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Cuboid Nature Aquarium","offers":[{"title":"Default Title","offer_id":48011243422007,"sku":"Melanotaenia vanheurni","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/cuboidstore.com\/products\/van-heurns-rainbow","provider":"Cuboid Aquatics LLC","version":"1.0","type":"link"}