{"product_id":"dwarf-pencilfish","title":"Dwarf Pencilfish","description":"\u003cp data-start=\"0\" data-end=\"46\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDwarf Pencilfish (\u003cem data-start=\"21\" data-end=\"45\"\u003eNannostomus marginatus\u003c\/em\u003e)\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"48\" data-end=\"483\"\u003eOften referred to as the \"Dwarf Pencilfish,\" this tiny South American species is a true gem for nano and planted aquariums. Despite its small size, the Dwarf Pencilfish captivates with its elegant slender body, striking horizontal black stripe, shimmering golden hues, and flashes of red in the fins. Their graceful swimming style and peaceful nature make them a favourite among aquascaping enthusiasts and community fishkeepers alike.\u003c\/p\u003e\n\u003cp data-start=\"485\" data-end=\"771\"\u003eCalm, active, and highly social, Dwarf Pencilfish spend much of their time cruising through the upper and middle levels of the aquarium. Their subtle beauty becomes even more impressive when kept in a large shoal, where they display natural schooling behaviour and enhanced colouration.\u003c\/p\u003e\n\u003cp data-start=\"773\" data-end=\"1130\"\u003e🌿 Why Choose Dwarf Pencilfish?\u003cbr\u003e✨ Elegant golden body with a bold black lateral stripe\u003cbr\u003e🐟 Perfect nano schooling fish for planted aquariums\u003cbr\u003e🌱 Ideal for aquascapes and peaceful community tanks\u003cbr\u003e🧘 Extremely peaceful and easy to mix with other small species\u003cbr\u003e🌈 Males develop richer colours during courtship\u003cbr\u003e💧 Small size makes them ideal for compact aquariums\u003c\/p\u003e\n\u003cp data-start=\"1132\" data-end=\"1421\"\u003eDwarf Pencilfish naturally inhabit slow-moving streams, flooded forests, and blackwater tributaries throughout the Amazon Basin in South America. These waters are rich in leaf litter, driftwood, overhanging vegetation, and aquatic plants, creating a calm environment with subdued lighting.\u003c\/p\u003e\n\u003cp data-start=\"1423\" data-end=\"1875\"\u003e📏 Care Requirements\u003cbr data-start=\"1443\" data-end=\"1446\"\u003e🧬 \u003cstrong data-start=\"1449\" data-end=\"1469\"\u003eScientific Name:\u003c\/strong\u003e \u003cem data-start=\"1470\" data-end=\"1494\"\u003eNannostomus marginatus\u003c\/em\u003e\u003cbr data-start=\"1494\" data-end=\"1497\"\u003e📛 \u003cstrong data-start=\"1500\" data-end=\"1516\"\u003eCommon Name:\u003c\/strong\u003e Dwarf Pencilfish\u003cbr data-start=\"1533\" data-end=\"1536\"\u003e🏠 \u003cstrong data-start=\"1539\" data-end=\"1553\"\u003eTank Size:\u003c\/strong\u003e 40L+ recommended\u003cbr data-start=\"1570\" data-end=\"1573\"\u003e📏 \u003cstrong data-start=\"1576\" data-end=\"1591\"\u003eAdult Size:\u003c\/strong\u003e Up to 3cm\u003cbr data-start=\"1601\" data-end=\"1604\"\u003e🌡️ \u003cstrong data-start=\"1608\" data-end=\"1624\"\u003eTemperature:\u003c\/strong\u003e 24–28°C\u003cbr data-start=\"1632\" data-end=\"1635\"\u003e⚗️ \u003cstrong data-start=\"1638\" data-end=\"1651\" data-is-only-node=\"\"\u003epH Range:\u003c\/strong\u003e 5.5–7.0\u003cbr data-start=\"1659\" data-end=\"1662\"\u003e🧘 \u003cstrong data-start=\"1665\" data-end=\"1681\"\u003eTemperament:\u003c\/strong\u003e Peaceful\u003cbr data-start=\"1690\" data-end=\"1693\"\u003e🍽️ \u003cstrong data-start=\"1697\" data-end=\"1706\"\u003eDiet:\u003c\/strong\u003e High-quality micro pellets, crushed flakes, baby brine shrimp, daphnia, cyclops, microworms, and other small frozen or live foods\u003cbr data-start=\"1836\" data-end=\"1839\"\u003e👥 \u003cstrong data-start=\"1842\" data-end=\"1857\"\u003eGroup Size:\u003c\/strong\u003e 8–10+ recommended\u003c\/p\u003e\n\u003cp data-start=\"1877\" data-end=\"2223\"\u003eDwarf Pencilfish thrive in mature, heavily planted aquariums with gentle filtration and subdued lighting. Floating plants, fine-leaved vegetation, driftwood, and leaf litter help recreate their natural habitat while making them feel secure. Dark substrates and natural décor also help enhance their golden colours and encourage natural behaviour.\u003c\/p\u003e\n\u003cp data-start=\"2225\" data-end=\"2241\"\u003e🐠 Compatibility\u003c\/p\u003e\n\u003cp data-start=\"2243\" data-end=\"2402\"\u003eDwarf Pencilfish are ideal for peaceful community aquariums and make excellent companions for other small, non-aggressive species. Suitable tank mates include:\u003c\/p\u003e\n\u003cp data-start=\"2404\" data-end=\"2609\"\u003e🐟 Ember Tetras\u003cbr data-start=\"2419\" data-end=\"2422\"\u003e🐟 Green Neon Tetras\u003cbr data-start=\"2442\" data-end=\"2445\"\u003e🐟 Chili Rasboras\u003cbr data-start=\"2462\" data-end=\"2465\"\u003e🐟 Celestial Pearl Danios\u003cbr data-start=\"2490\" data-end=\"2493\"\u003e🐟 Corydoras pygmaeus, habrosus, and hastatus\u003cbr data-start=\"2538\" data-end=\"2541\"\u003e🐟 Otocinclus\u003cbr data-start=\"2554\" data-end=\"2557\"\u003e🦐 Freshwater Shrimp\u003cbr data-start=\"2577\" data-end=\"2580\"\u003e🐌 Peaceful freshwater snails\u003c\/p\u003e\n\u003cp data-start=\"2611\" data-end=\"2829\"\u003eAvoid keeping them with large, aggressive, or fast-moving fish that may outcompete them during feeding or cause them to become shy. Their tiny size also makes them unsuitable for aquariums containing predatory species.\u003c\/p\u003e\n\u003ch2 data-section-id=\"9ghvog\" data-start=\"2831\" data-end=\"2849\"\u003eImportant Notes\u003c\/h2\u003e\n\u003cp data-start=\"2851\" data-end=\"3108\"\u003eDwarf Pencilfish are best kept in groups, where they feel secure and display their most natural behaviours. Although they are capable of loose schooling, they often spread throughout the aquarium, creating a beautiful, natural display among plants and wood.\u003c\/p\u003e\n\u003cp data-start=\"3110\" data-end=\"3314\"\u003eTheir small mouths mean they require appropriately sized foods. Offering a varied diet of fine pellets and small frozen or live foods will help maintain excellent health and encourage vibrant colouration.\u003c\/p\u003e\n\u003cp data-start=\"3316\" data-end=\"3633\"\u003eThese fish prefer mature aquariums with stable water conditions and are particularly well suited to blackwater and heavily planted aquascapes. They are peaceful enough to be housed with dwarf shrimp, making them a popular choice for shrimp keepers looking to add colourful fish without disturbing their invertebrates.\u003c\/p\u003e\n\u003cp data-start=\"3635\" data-end=\"3932\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe Dwarf Pencilfish is a fantastic choice for UK aquarists looking for a peaceful, elegant, and easy-to-care-for nano fish. With its graceful swimming, subtle beauty, and excellent compatibility with planted aquariums, it makes a superb addition to any tranquil freshwater community or aquascape.\u003c\/p\u003e\n\u003cp data-start=\"3635\" data-end=\"3932\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"3635\" data-end=\"3932\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eAll livestock is available for delivery or pickup!\u003c\/p\u003e","brand":"Petra-aqua","offers":[{"title":"Default Title","offer_id":58397445849469,"sku":null,"price":6.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/4983\/3648\/files\/ChatGPTImageJul15_2026_01_59_37PM.png?v=1784120418","url":"https:\/\/www.snuffleandswim.com\/products\/dwarf-pencilfish","provider":"Snuffle and Swim","version":"1.0","type":"link"}