{"product_id":"black-widow-tetra-gymnocorymbus-ternetzi-2cm-pack-of-6","title":"Black Widow Tetra Gymnocorymbus Ternetzi 2cm","description":"\u003ch4\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Black Widow Tetra, also called the Black Skirt Tetra, is a deep-bodied fish with two vertical bars and a sooty black rear half that fades to grey with age. Its flowing anal fin gives it a distinctive skirted look. Native to the Paraguay basin of South America, it suits active community tanks and beginners.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eAdult Size:\u003c\/em\u003e Around 6 cm (2.4 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eLifespan:\u003c\/em\u003e 5–7 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eNative to:\u003c\/em\u003e Paraguay and Guaporé basins: Brazil, Bolivia, Argentina\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHabitat:\u003c\/em\u003e Slow creeks and streams under overhanging vegetation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eFeeding\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eDiet:\u003c\/em\u003e Omnivorous\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003ePreferred Foods:\u003c\/em\u003e Flake, granules, daphnia, bloodworm, brine shrimp, spirulina flake\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFeeding Habits:\u003c\/em\u003e Feed once or twice daily; varied diet keeps body deep\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eTank Mates\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eBest with:\u003c\/em\u003e Danios, rasboras, robust tetras, corydoras, livebearers\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eAvoid:\u003c\/em\u003e Long-finned fish such as guppies, bettas and angelfish; timid species\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eAggression \u0026amp; Behaviour\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eTemperament:\u003c\/em\u003e Generally peaceful, can be boisterous\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTerritoriality:\u003c\/em\u003e Low; fin nipping if kept in small numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eExperience Level\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eDifficulty:\u003c\/em\u003e Beginner\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eChallenges:\u003c\/em\u003e Needs a large shoal to curb nipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWater Parameters\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eWater Type:\u003c\/em\u003e Freshwater, soft to moderately hard\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTemperature:\u003c\/em\u003e 20–26°C (68–79°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003epH:\u003c\/em\u003e 6.0–7.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHardness:\u003c\/em\u003e 5–20 dGH\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eFlow:\u003c\/em\u003e Slow to moderate\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTank Size:\u003c\/em\u003e Minimum 80 litres for a shoal of eight or more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eFinal Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eKeep at least eight, ideally more, as small groups are prone to nipping slower tank mates. The black colouring is strongest in young fish and fades to silver grey with age, which is normal. Black Widows are hardy egg scatterers that spawn readily over fine plants, with males slimmer and females fuller bodied. Give them open swimming space with planted edges. A robust, long-lived tetra.\u003c\/p\u003e","brand":"SimsTF","offers":[{"title":"Default Title","offer_id":64680661975417,"sku":"STF-TETRA-BLK-WIDOW","price":4.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1026\/3124\/4153\/files\/STF-TETRA-BLK-WIDOW.png?v=1790096796","url":"https:\/\/birchwoodaquaticcentre.co.uk\/products\/black-widow-tetra-gymnocorymbus-ternetzi-2cm-pack-of-6","provider":"Birchwood Aquatic Centre","version":"1.0","type":"link"}