{"product_id":"blue-emperor-tetra-3-5-4cm","title":"Blue Emperor Tetra 3.5-4cm","description":"\u003cp\u003e\u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e are elegant, medium‑sized schooling tetras with luminous blue to mauve males that really shine under the right lighting. Staying smaller than many other emperor tetras, \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e are perfect for peaceful community aquariums and planted tanks with gentle flow and softer lighting.\u003c\/p\u003e\n\u003cdiv id=\"tab-description\" class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content active\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eThe \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e is a slightly smaller, more refined emperor tetra species that brings subtle colour and constant movement to community aquariums. In softer, side‑lit or moderately lit tanks, males display a beautiful \u003cstrong\u003eluminous blue to mauve sheen\u003c\/strong\u003e, while females show softer tones and a more rounded body shape.\u003c\/div\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eBecause they stay relatively small and have a peaceful temperament, \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e are an excellent choice for planted aquariums, aquascapes and calm community setups.\u003c\/div\u003e\n\u003ch3\u003eBlue Emperor Tetra 3.5–4cm – Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSlightly smaller species compared to other emperor tetras\u003c\/li\u003e\n\u003cli\u003eSize at sale: approximately \u003cstrong\u003e3.5–4cm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMales show \u003cstrong\u003eluminous blue to mauve\u003c\/strong\u003e body colour in the right lighting\u003c\/li\u003e\n\u003cli\u003eActive, peaceful schooling fish – ideal for community tanks\u003c\/li\u003e\n\u003cli\u003eLooks fantastic in \u003cstrong\u003eplanted aquariums\u003c\/strong\u003e with softer, side or ambient lighting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eIf you want a schooling fish with elegant colour rather than neon intensity, \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e is a great option.\u003c\/div\u003e\n\u003ch3\u003eTank Requirements for Blue Emperor Tetra\u003c\/h3\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003e\n\u003cstrong\u003eBlue Emperor Tetras\u003c\/strong\u003e are active, mid‑water schooling fish that appreciate space and company:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank size:\u003c\/strong\u003e from \u003cstrong\u003e60cm \/ 2ft\u003c\/strong\u003e upwards for a small group\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup size:\u003c\/strong\u003e keep in groups of \u003cstrong\u003e6+\u003c\/strong\u003e, ideally 10+ for best behaviour and colour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDécor:\u003c\/strong\u003e plants, driftwood and open swimming space\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e avoid very harsh, bright overhead light – side light or moderate lighting helps their colours show better\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiltration:\u003c\/strong\u003e gentle to moderate flow with good oxygenation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eA planted, slightly shaded aquarium helps \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e feel secure and display their best colours.\u003c\/div\u003e\n\u003ch3\u003eWater Parameters (Guide Only)\u003c\/h3\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eBlue emperors are fairly adaptable but do best in clean, stable water:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eTemperature: around \u003cstrong\u003e23–27°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003epH: roughly \u003cstrong\u003e6.0–7.5\u003c\/strong\u003e (slightly acidic to neutral)\u003c\/li\u003e\n\u003cli\u003eHardness: soft to medium hardness\u003c\/li\u003e\n\u003cli\u003eAmmonia \u0026amp; Nitrite: \u003cstrong\u003e0 ppm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eNitrate: kept low with regular water changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eConsistent maintenance and avoiding sudden parameter swings are key for long‑term success with \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e.\u003c\/div\u003e\n\u003ch3\u003eFeeding Blue Emperor Tetra 3.5–4cm\u003c\/h3\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003e\n\u003cstrong\u003eBlue Emperor Tetras\u003c\/strong\u003e are omnivores and very easy to feed:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eStaple foods:\n\u003cul\u003e\n\u003cli\u003eQuality micro‑pellets or small tropical pellets\u003c\/li\u003e\n\u003cli\u003eFine flake foods designed for community fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtras and treats:\n\u003cul\u003e\n\u003cli\u003eFrozen or live foods such as daphnia, brine shrimp and bloodworms (in moderation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eFeed small amounts 1–2 times daily, ensuring all food is consumed within a few minutes. A varied diet keeps \u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e in good condition and helps males show their best colour.\u003c\/div\u003e\n\u003ch3\u003eBehaviour and Tank Mates\u003c\/h3\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003e\n\u003cstrong\u003eBlue Emperor Tetra 3.5–4cm\u003c\/strong\u003e are active, peaceful schooling fish:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eBehaviour: mid‑water swimmers that look best in a group\u003c\/li\u003e\n\u003cli\u003eTemperament: generally peaceful and community‑friendly\u003c\/li\u003e\n\u003cli\u003eDisplay: males may display to each other, showing off their blue to mauve colours\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eSuitable tank mates include:\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eOther peaceful tetras and rasboras\u003c\/li\u003e\n\u003cli\u003eCorydoras catfish and smaller peaceful bottom dwellers\u003c\/li\u003e\n\u003cli\u003eSmall, calm gourami or dwarf cichlids (with care and space)\u003c\/li\u003e\n\u003cli\u003eShrimp and snails may be suitable, though very small shrimplets can be at risk\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"mb-1 mt-2 whitespace-pre-line leading-relaxed first:mt-0\" data-sentry-component=\"P\" data-sentry-source-file=\"p.tsx\"\u003eAvoid large, aggressive or fin‑nipping fish that may stress \u003cstrong\u003eBlue Emperor Tetras\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Aquarium Haven \u0026 Brisbane Discus","offers":[{"title":"Default Title","offer_id":43689849258072,"sku":"TETRA-BET4","price":9.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/0152\/3800\/files\/Blue-Emperor-Tetra.webp?v=1769236733","url":"https:\/\/aquariumhaven.com.au\/products\/blue-emperor-tetra-3-5-4cm","provider":"Aquarium Haven \u0026 Brisbane Discus","version":"1.0","type":"link"}