{"product_id":"longfin-white-widow-tetra-gymnocorymbus-ternetzi","title":"Longfin White Widow Tetra | Gymnocorymbus ternetzi","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThe Longfin White Widow Tetra is a flowing-finned, leucistic form of the classic Black Widow (Black Skirt) Tetra, trading the usual smoky charcoal for a soft ghostly white with trailing fins. Hardy, cheerful and endlessly active, it's a brilliant beginner shoaler that grows to around 5–6 cm and looks its best in a group of six or more.\u003c\/p\u003e\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\u003cp\u003eThe parent species comes from the Paraguay and Guaporé river basins of central South America, where it lives in slow-moving creeks, backwaters and densely planted margins. The water is warm, soft to neutral and often stained with tannins from overhanging vegetation. The long-fin and white forms are aquarium-developed and are not found in the wild.\u003c\/p\u003e\u003ch2\u003eAppearance\u003c\/h2\u003e\u003cp\u003eThis form carries the deep, laterally compressed body of the Black Widow but in a pale, milky white with only faint traces of the two dark vertical bars behind the gills. The long-fin selection adds elegant, extended dorsal and anal fins that ripple as the fish swims. Adults reach roughly 5–6 cm.\u003c\/p\u003e\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\u003cp\u003ePeaceful and lively, though it can be a mild fin-nipper when kept in small numbers or alongside slow, long-finned tankmates. Keeping a shoal of six or more spreads out any squabbling and keeps the fish confident and settled.\u003c\/p\u003e\u003ch2\u003eFeeding\u003c\/h2\u003e\u003cp\u003eAn easy-going omnivore. Offer good-quality flake or micro-pellets as a staple, supplemented with frozen or live daphnia, brine shrimp and bloodworm for colour and condition.\u003c\/p\u003e\u003ch2\u003eCare Requirements\u003c\/h2\u003e\u003cp\u003eUndemanding and forgiving of a range of conditions, making it ideal for newcomers. Provide gentle to moderate flow, some planting and open swimming space, and keep on top of regular water changes. Warm, soft to neutral water suits it best.\u003c\/p\u003e\u003ch2\u003eBreeding\u003c\/h2\u003e\u003cp\u003eAn egg-scattering species that shows no parental care. A separate, dimly lit breeding tank with fine-leaved plants or a spawning mesh lets some eggs survive, as the adults will eat them given the chance. Feed the free-swimming fry infusoria and then baby brine shrimp.\u003c\/p\u003e\u003ch2\u003eSpecies Information\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eGymnocorymbus ternetzi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eLongfin White Widow Tetra (Black Skirt Tetra)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eParaguay \u0026amp; Guaporé basins, South America (aquarium-bred form)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003eAround 5–6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e3–5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful; mild fin-nipper in small groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eBeginner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Tank Size\u003c\/td\u003e\n\u003ctd\u003e60 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e100 litres or more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eOmnivore (flake, micro-pellet, frozen foods)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e22–26 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e6.0–7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGH Range\u003c\/td\u003e\n\u003ctd\u003e5–19 dGH (soft to moderately hard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003eNot applicable (freshwater)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eBeginners; peaceful planted community tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReef Safe\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlant Safe\u003c\/td\u003e\n\u003ctd\u003eYes — does not eat or uproot plants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\u003cp\u003eOther peaceful community fish of similar size: tetras, rasboras, danios, peaceful barbs, Corydoras, bristlenose catfish and smaller rainbowfish. Best kept in a shoal of six or more of its own kind.\u003c\/p\u003e\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\u003cp\u003eVery slow, long-finned fish such as fancy guppies and bettas that may be nipped, and large or aggressive cichlids that could bully or eat them.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55232817824035,"sku":"BA8957","price":8.95,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm)","offer_id":55232817856803,"sku":null,"price":13.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Longfin_White_Widow_Tetra.jpg?v=1781484074","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/longfin-white-widow-tetra-gymnocorymbus-ternetzi","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}