{"product_id":"black-widow-tetra-gymnocorymbus-ternetzi-4cm","title":"Black Widow Tetra (Gymnocorymbus ternetzi) 4cm","description":"\u003cp\u003eThe Black Widow Tetra (Gymnocorymbus ternetzi), also widely known as the Black Skirt Tetra, is a hardy, active, and popular freshwater schooling fish native to the Paraguay River basin in South America. It is highly recommended for beginner aquarium hobbyists because it adapts easily to a wide range of water parameters and is very budget-friendly.\u003c\/p\u003e\n\u003cp\u003eSpecies Overview\u003c\/p\u003e\n\u003cp\u003eScientific Name: Gymnocorymbus ternetzi\u003c\/p\u003e\n\u003cp\u003eAdult Size: 2 to 3 inches (5 to 7.5 cm)\u003c\/p\u003e\n\u003cp\u003eLifespan: 3 to 5 years\u003c\/p\u003e\n\u003cp\u003eTemperament: Generally peaceful but prone to fin-nipping\u003c\/p\u003e\n\u003cp\u003eDiet: Omnivore\u003c\/p\u003e\n\u003cp\u003eTank Setup \u0026amp; Water Parameters\u003c\/p\u003e\n\u003cp\u003eBlack Widow Tetras are mid-to-top level dwellers that thrive in well-planted setups with plenty of open swimming space.\u003c\/p\u003e\n\u003cp\u003eMinimum Tank Size: 20 gallons (approx. 75-114 liters) to accommodate a proper school.\u003c\/p\u003e\n\u003cp\u003eTemperature Range: 68°F to 79°F (20°C to 26°C).\u003c\/p\u003e\n\u003cp\u003epH Range: 6.0 to 7.5.\u003c\/p\u003e\n\u003cp\u003eWater Hardness: Up to 15 dGH.\u003c\/p\u003e\n\u003cp\u003eDecor: They prefer dim lighting, floating plants, and dark substrates to mimic their natural river canopy environments.\u003c\/p\u003e\n\u003cp\u003eDiet and Feeding\u003c\/p\u003e\n\u003cp\u003eThese fish are not picky eaters and will accept almost any food offered. To keep their colors vibrant and support health, offer a varied diet:\u003c\/p\u003e\n\u003cp\u003eBase Diet: High-quality tropical flake foods or small sinking pellets.\u003c\/p\u003e\n\u003cp\u003eTreats: Live or frozen brine shrimp, daphnia, bloodworms, or mosquito larvae.\u003c\/p\u003e\n\u003cp\u003ePro Tip: Ensure food particles are small enough to fit into their tiny mouths.\u003c\/p\u003e\n\u003cp\u003eBehavior and Tank Mates\u003c\/p\u003e\n\u003cp\u003eYou must keep Black Widow Tetras in schools of at least 5 to 7 fish. Keeping them in a proper shoal keeps them feeling secure and significantly reduces aggressive bickering or fin-nipping behavior directed at other species.\u003c\/p\u003e\n\u003cp\u003eGood Tank Mates: Peaceful, fast-moving fish of a similar size like other tetras (e.g., Neon Tetras), rasboras, Corydoras catfish, and opaline gouramis.\u003c\/p\u003e\n\u003cp\u003eFish to Avoid: Slow-moving fish with long, flowing fins like Bettas, Angelfish, or fancy guppies, as the Black Widow Tetra will nip at their fins. Avoid housing them with very tiny shrimp, which may be viewed as food.\u003c\/p\u003e","brand":"Jasmin Aquatics Store","offers":[{"title":"Default Title","offer_id":53428053573929,"sku":null,"price":4.75,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/4325\/2521\/files\/Micro-Pellets_20260814_201821_0000.png?v=1786724341","url":"https:\/\/jasminaquaticsstore.com\/ar\/products\/black-widow-tetra-gymnocorymbus-ternetzi-4cm","provider":"Jasmin Aquatics Store","version":"1.0","type":"link"}