{"product_id":"koi-crown-tail-male-fighting-fish-betta-splendens","title":"Koi Crown Tail Male Fighting Fish | Betta splendens","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eThe Koi Crowntail is one of the most eye-catching bettas in the hobby, pairing a marbled \"koi\" pattern of red, black, white and orange with the dramatic, spiky rays of a crowntail fin. This is a male fighting fish — bold, curious and full of personality despite reaching only about 6–7 cm. Like all bettas he is a labyrinth fish who gulps air from the surface, so he is hardy but needs a warm, calm tank with a secure lid and no open gaps.\u003c\/p\u003e\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\u003cp\u003eWild Betta splendens come from the still, shallow waters of central Thailand — rice paddies, roadside ditches, floodplains and slow canals in the Chao Phraya basin. These warm, oxygen-poor waters are exactly why bettas evolved to breathe air, and modern ornamental koi strains like this one are entirely captive-bred.\u003c\/p\u003e\u003ch2\u003eAppearance\u003c\/h2\u003e\u003cp\u003eA crowntail carries webbing that is reduced between the fin rays, giving the tail and fins a spiky, crown-like edge. The koi colouration is a marbled patchwork that can shift over the fish's life, so no two are identical and your betta's pattern may continue to develop. Males are far larger-finned and more vividly coloured than females.\u003c\/p\u003e\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\u003cp\u003eMale bettas are solitary and territorial — never house two males together, and avoid keeping a male with females except for controlled breeding. He can, however, be a peaceful centrepiece in a calm community of non-nippy, non-flashy tankmates. Watch for fin-nipping, which quickly ruins those delicate rays.\u003c\/p\u003e\u003ch2\u003eFeeding\u003c\/h2\u003e\u003cp\u003eBettas are carnivores and insectivores. Offer a good-quality betta pellet as a staple and supplement regularly with frozen or live bloodworm, daphnia and brine shrimp. Feed small amounts and avoid overfeeding, as bettas are prone to bloating and fussy about stale food.\u003c\/p\u003e\u003ch2\u003eCare Requirements\u003c\/h2\u003e\u003cp\u003eGive him a heated, gently filtered tank of at least 20 litres with soft planting, some broad-leaved plants or a betta hammock near the surface to rest on, and calm flow — long fins tire easily in strong currents. Keep the water warm and stable, do regular partial water changes, and always cover the tank, as bettas can jump and rely on breathing warm, humid air at the surface.\u003c\/p\u003e\u003ch2\u003eBreeding\u003c\/h2\u003e\u003cp\u003eBettas are bubble-nest builders. A conditioned male builds a raft of bubbles at the surface, courts the female beneath it, and tends the eggs and fry himself. Breeding requires a dedicated setup, careful conditioning and the female removed after spawning, as pairs can turn aggressive.\u003c\/p\u003e\u003ch2\u003eSpecies Information\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eBetta splendens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eSiamese Fighting Fish (Koi Crowntail, male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eCentral Thailand (Chao Phraya basin); captive-bred ornamental strain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003e6–7 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e2–4 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003eMales solitary and aggressive; females more tolerant\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\u003e20 litres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e20+ litres (one male only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eCarnivore\/insectivore (betta pellet, frozen and live foods)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e24–28 °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\u003e5–20 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\u003eHeated, planted nano and calm community tanks (one male only)\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\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\u003cp\u003ePeaceful, non-nippy companions such as Corydoras, kuhli loaches, Otocinclus, ember tetras, harlequin rasboras, snails and (with some caution) shrimp. A single male betta is best as the only showy fish in the tank.\u003c\/p\u003e\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\u003cp\u003eOther male bettas, fin-nippers such as tiger barbs and some tetras, other long-finned or brightly coloured fish that may trigger aggression, and boisterous or aggressive species.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55351901946147,"sku":null,"price":40.0,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm)","offer_id":55232796983587,"sku":"AA2400","price":45.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Koi_Crowntail_Male_5dee44b4-3bc3-447b-b69d-3ce4d7d19cdb.jpg?v=1781698528","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/koi-crown-tail-male-fighting-fish-betta-splendens","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}