{"product_id":"fourline-cardinalfish-ostorhinchus-doederleini","title":"Fourline Cardinalfish | Ostorhinchus doederleini","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eNeatly pinstriped and calm by nature, the Fourline Cardinalfish hovers quietly by day and comes alive at dusk. A peaceful, easy-going fish for a reef community.\u003c\/p\u003e\u003ch2\u003eNatural Habitat\u003c\/h2\u003e\u003cp\u003eFourline Cardinalfish are found around sheltered coastal reefs, rocky areas, coral rubble and lagoon habitats. They often remain close to caves, ledges and shaded areas during bright periods, becoming more active during lower light. Their natural environment includes moderate water movement, plenty of hiding structure and access to small crustaceans and zooplankton drifting through the reef.\u003c\/p\u003e\u003ch2\u003eAppearance\u003c\/h2\u003e\u003cp\u003eThis species has a slender cardinalfish profile with clean horizontal striping, translucent fins and a softly reflective body. The lines along the body give it a tidy, streamlined appearance, while the eyes are large and adapted for feeding in dimmer conditions. Adults remain small enough for modest marine aquariums but still show best when given room to hover in open water near rockwork.\u003c\/p\u003e\u003ch2\u003eTemperament and Compatibility\u003c\/h2\u003e\u003cp\u003eFourline Cardinalfish are peaceful and usually suitable for community reef aquariums. They should be introduced with calm tank mates and given caves or shaded retreats. They can be kept alone, in pairs or in small groups if the aquarium is large enough and aggression is monitored. They are safe with corals and most ornamental invertebrates, although tiny crustaceans may be eaten as natural prey.\u003c\/p\u003e\u003ch2\u003eFeeding\u003c\/h2\u003e\u003cp\u003eFeed a varied meaty diet of frozen mysis shrimp, enriched brine shrimp, finely chopped marine foods, copepods, small krill and quality marine pellets. They may be cautious at first, so target feeding near their preferred shelter can help. Once settled, most individuals feed readily from the water column.\u003c\/p\u003e\u003ch2\u003eCare Requirements\u003c\/h2\u003e\u003cp\u003eA single fish can be housed from around 100 L, with 160 L or larger recommended for a more natural display or group. Keep temperature at 24–27°C, pH 8.1–8.4 and salinity 1.023–1.026. Moderate filtration, steady water quality and weekly or fortnightly water changes are recommended. Provide gentle to moderate flow, with calmer pockets near caves. Standard marine or reef lighting is suitable, but shaded rockwork should be available. This species appreciates a secure aquascape with ledges, caves and open swimming space at the front of the tank.\u003c\/p\u003e\u003ch2\u003eBreeding\u003c\/h2\u003e\u003cp\u003eBreeding in aquariums is possible but not commonly targeted. Like many cardinalfish, related species show mouthbrooding behaviour, with males protecting eggs until they develop. Conditioning adults on high-quality frozen and enriched foods improves breeding potential.\u003c\/p\u003e\u003ch2\u003eSpecies Information\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003eOstorhinchus doederleini\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Name\u003c\/td\u003e\n\u003ctd\u003eFourline Cardinalfish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eWestern Pacific reefs including Japan, Taiwan and surrounding regions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Size\u003c\/td\u003e\n\u003ctd\u003e8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e3–5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperament\u003c\/td\u003e\n\u003ctd\u003ePeaceful, shy when first introduced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifficulty\u003c\/td\u003e\n\u003ctd\u003eEasy to moderate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Tank Size\u003c\/td\u003e\n\u003ctd\u003e100 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tank Size\u003c\/td\u003e\n\u003ctd\u003e160 L or larger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiet\u003c\/td\u003e\n\u003ctd\u003eCarnivore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Temperature\u003c\/td\u003e\n\u003ctd\u003e24–27°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e8.1–8.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGH Range\u003c\/td\u003e\n\u003ctd\u003eNot applicable – marine species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity\u003c\/td\u003e\n\u003ctd\u003e1.023–1.026 specific gravity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable For\u003c\/td\u003e\n\u003ctd\u003eEstablished marine aquariums and peaceful reef systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReef Safe\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlant Safe\u003c\/td\u003e\n\u003ctd\u003eNot applicable – marine species\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSuitable Tank Mates\u003c\/h2\u003e\u003cp\u003eSuitable tank mates include peaceful clownfish, gobies, blennies, firefish, small wrasses and other non-aggressive reef fish.\u003c\/p\u003e\u003ch2\u003eAvoid Keeping With\u003c\/h2\u003e\u003cp\u003eAvoid keeping with large predators, aggressive damsels, bullying dottybacks and very boisterous feeding species.\u003c\/p\u003e","brand":"Nick's Aquarium Oceanarium Terrarium","offers":[{"title":"Small (1-5cm)","offer_id":55351890903331,"sku":null,"price":11.25,"currency_code":"AUD","in_stock":false},{"title":"Medium (5-10cm)","offer_id":55216358588707,"sku":"BA8451","price":16.25,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/Fourline_Cardinalfish_Ostorhinchus_doederleini_c4232aeb-8f61-4247-8d81-193e9f46ae40.jpg?v=1781681222","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fourline-cardinalfish-ostorhinchus-doederleini","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}