{"id":8584,"date":"2026-02-17T07:09:03","date_gmt":"2026-02-17T07:09:03","guid":{"rendered":"https:\/\/aquadistribution.co.uk\/product\/long-fin-black-widow-tetra-gymnocorymbus-ternetzi-3cm\/"},"modified":"2026-02-17T07:09:03","modified_gmt":"2026-02-17T07:09:03","slug":"long-fin-black-widow-tetra-gymnocorymbus-ternetzi-3cm","status":"publish","type":"product","link":"https:\/\/aquadistribution.co.uk\/?product=long-fin-black-widow-tetra-gymnocorymbus-ternetzi-3cm","title":{"rendered":"Long Fin Black Widow Tetra Gymnocorymbus Ternetzi 3cm"},"content":{"rendered":"<h3 data-start=\"0\" data-end=\"81\"><strong data-start=\"4\" data-end=\"81\">Long Fin Black Widow Tetra (<em data-start=\"34\" data-end=\"58\">Gymnocorymbus ternetzi<\/em>)<\/strong><\/h3>\n<h4 data-start=\"83\" data-end=\"102\"><strong data-start=\"88\" data-end=\"100\">Overview<\/strong><\/h4>\n<p data-start=\"103\" data-end=\"352\">The Long Fin Black Widow Tetra is a flowing-finned variant of the classic Black Skirt Tetra, known for its striking black-and-silver body and elegant, elongated fins. Hardy, active, and social, it brings movement and contrast to community aquariums.<\/p>\n<h4 data-start=\"354\" data-end=\"371\"><strong data-start=\"359\" data-end=\"369\">Origin<\/strong><\/h4>\n<p data-start=\"372\" data-end=\"529\">Native to South America, particularly river basins in Paraguay, Brazil, and Argentina. The long-fin morph is selectively captive-bred for the aquarium hobby.<\/p>\n<h4 data-start=\"531\" data-end=\"549\"><strong data-start=\"536\" data-end=\"547\">Feeding<\/strong><\/h4>\n<p data-start=\"550\" data-end=\"706\">Omnivorous and very adaptable. Enjoys flakes, micro-pellets, frozen foods (brine shrimp, daphnia), and occasional live foods to promote colour and vitality.<\/p>\n<h4 data-start=\"708\" data-end=\"729\"><strong data-start=\"713\" data-end=\"727\">Tank Mates<\/strong><\/h4>\n<p data-start=\"730\" data-end=\"934\">Excellent for peaceful community tanks. Suitable companions include rasboras, peaceful tetras, dwarf cichlids, corydoras, and small gouramis. Avoid fin-nipping species due to their delicate, flowing fins.<\/p>\n<h4 data-start=\"936\" data-end=\"957\"><strong data-start=\"941\" data-end=\"955\">Aggression<\/strong><\/h4>\n<p data-start=\"958\" data-end=\"1127\">Mostly peaceful with only mild chasing, especially when kept in smaller groups. Best maintained in schools of 6 or more to reduce stress and encourage natural behaviour.<\/p>\n<h4 data-start=\"1129\" data-end=\"1156\"><strong data-start=\"1134\" data-end=\"1154\">Experience Level<\/strong><\/h4>\n<p data-start=\"1157\" data-end=\"1216\">Great for beginners\u2014hardy, adaptable, and easy to care for.<\/p>\n<h4 data-start=\"1218\" data-end=\"1245\"><strong data-start=\"1223\" data-end=\"1243\">Water Parameters<\/strong><\/h4>\n<ul data-start=\"1246\" data-end=\"1343\">\n<li data-start=\"1246\" data-end=\"1292\">\n<p data-start=\"1248\" data-end=\"1292\"><strong data-start=\"1248\" data-end=\"1264\">Temperature:<\/strong> 72\u00b0F \u2013 80\u00b0F (22\u00b0C \u2013 27\u00b0C)<\/p>\n<\/li>\n<li data-start=\"1293\" data-end=\"1314\">\n<p data-start=\"1295\" data-end=\"1314\"><strong data-start=\"1295\" data-end=\"1302\">pH:<\/strong> 6.0 \u2013 7.5<\/p>\n<\/li>\n<li data-start=\"1315\" data-end=\"1343\">\n<p data-start=\"1317\" data-end=\"1343\"><strong data-start=\"1317\" data-end=\"1330\">Hardness:<\/strong> 4 \u2013 15 dGH<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1345\" data-end=\"1482\" data-is-last-node=\"\" data-is-only-node=\"\">Attractive, hardy, and full of movement, the Long Fin Black Widow Tetra adds elegance and personality to any peaceful community aquarium.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Long Fin Black Widow Tetra (Gymnocorymbus ternetzi) Overview The Long Fin Black Widow Tetra is a flowing-finned variant of the classic Black Skirt Tetra, known for its striking black-and-silver body and elegant, elongated fins. Hardy, active, and social, it brings movement and contrast to community aquariums. Origin Native to South America, particularly river basins in [&hellip;]<\/p>\n","protected":false},"featured_media":8583,"template":"","meta":[],"product_brand":[],"product_cat":[37],"product_tag":[],"class_list":{"0":"post-8584","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-tetra","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"group_of_quantity":0,"min_quantity":0,"max_quantity":"","exclude_order_quantity_value_rules":"no","exclude_category_quantity_rules":"no","combine_variations":"no","exclude_global_add_ons":[],"addons":[],"_links":{"self":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/product\/8584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/media\/8583"}],"wp:attachment":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8584"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=8584"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=8584"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=8584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}