{"product_id":"black-widow-tetra-gymnocorymbus-ternetzi","title":"Black Widow Tetra | Gymnocorymbus ternetzi","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe Black Widow Tetra, also known as the Black Skirt Tetra, is a hardy, easygoing shoaler with a striking silvery-front, inky-black rear and flowing skirt-like anal fin. Young fish are boldly two-toned and fade to smoky grey as they age. A classic beginner's tetra with real presence and personality in a planted group.\u003c\/p\u003e\n\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\n\u003cp\u003eGymnocorymbus ternetzi comes from the Paraguay and Guaporé river basins of central South America, where it lives in slow-moving creeks, tributaries and pools with plenty of overhanging vegetation. These are soft to neutral, gently-flowing, shaded waters.\u003c\/p\u003e\n\u003ch2\u003eAppearance\u003c\/h2\u003e\n\u003cp\u003eA deep, laterally-compressed tetra with two vertical black bars behind the head and a bold black rear half, including a large, skirt-like anal fin. Colour is most intense in youngsters and mellows to grey with age. Long-fin and white (leucistic) varieties differ only in finnage and colour. Males are slimmer, females rounder.\u003c\/p\u003e\n\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\n\u003cp\u003ePeaceful and adaptable in a good-sized group, though it can turn into a fin-nipper when kept in too small a number or with slow, long-finned tankmates. A shoal of six or more keeps them settled and directs any nipping among themselves. An easy community fish overall.\u003c\/p\u003e\n\u003ch2\u003eFeeding\u003c\/h2\u003e\n\u003cp\u003eA micro-predator and omnivore that accepts almost anything. Feed a quality flake or micro-pellet as the base and supplement with frozen and live foods such as bloodworm, daphnia and brine shrimp. Varied feeding keeps colour and vigour up.\u003c\/p\u003e\n\u003ch2\u003eCare Requirements\u003c\/h2\u003e\n\u003cp\u003eUndemanding and hardy in soft to neutral, well-filtered water with gentle to moderate flow. Provide a planted tank with some open swimming space and a darker substrate to show off their colour. Keep them in a shoal of six or more and cover the tank, as tetras can jump.\u003c\/p\u003e\n\u003ch2\u003eBreeding\u003c\/h2\u003e\n\u003cp\u003eAn egg-scattering species that spawns readily among fine-leaved plants in soft, slightly acidic water. Adults eat their eggs, so use a spawning mesh or remove them afterwards. Fry are tiny and need infusoria or liquid fry food before graduating to baby brine shrimp.\u003c\/p\u003e\n\u003ch2\u003eSpecies Information\u003c\/h2\u003e\n\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\u003eBlack Widow Tetra (Black Skirt Tetra)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSouth America (Paraguay and Guaporé basins)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003eAround 5-6cm\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 (schooling; can nip if under-grouped)\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\u003e75 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e110 litres or more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eOmnivore (micro)\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\u003e3-15 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\u003ePeaceful planted community aquariums\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\n\u003cp\u003eOther peaceful community fish of similar size such as other tetras, rasboras, danios, barbs, Corydoras, peaceful gouramis and rainbowfish. Best in a shoal of six or more of its own kind.\u003c\/p\u003e\n\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\n\u003cp\u003eSlow, long-finned fish such as bettas, guppies and fancy goldfish, which may be nipped, and large aggressive cichlids. Keeping a proper-sized group greatly reduces any nipping tendency.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55232816742691,"sku":"AA1533","price":7.95,"currency_code":"AUD","in_stock":true},{"title":"Medium (5-10cm)","offer_id":55232816775459,"sku":null,"price":12.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Black_Widow_Tetra.jpg?v=1781483458","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/black-widow-tetra-gymnocorymbus-ternetzi","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}