Asian Arowana Care Guide: Scleropages Formosus Licensing and Care in Singapore
No freshwater fish carries the cultural weight and market value of the Asian arowana, a living symbol of prosperity across Southeast Asia. This Asian arowana care guide Singapore edition from Gensou Aquascaping at 5 Everton Park, Singapore covers the legal requirements, husbandry essentials and colour development strategies that local keepers need. Scleropages formosus is a CITES Appendix I species, meaning ownership in Singapore is tightly regulated, and understanding the licensing framework is just as important as understanding the fish itself.
Legal Requirements in Singapore
Every Asian arowana sold in Singapore must come from a licensed captive-breeding farm and carry a microchip implant with a unique identification number. The fish must be accompanied by a CITES certificate, and the seller must be an AVS-licensed dealer. Buyers do not need a separate licence to own an Asian arowana, but keeping proper documentation is essential. Retain your purchase receipt, CITES certificate and microchip number indefinitely. If you sell or transfer the fish, update the records through the dealer. Purchasing from unlicensed sources or importing without permits carries severe penalties.
Colour Varieties and Grading
Four main colour varieties dominate the market. The red arowana, particularly the Super Red from Kalimantan, commands the highest prices, with quality specimens ranging from $5,000 to over $50,000. Cross-back golden arowanas display metallic gold scales across the entire body, while high-back golds show colour only to the fourth row. Green arowanas are the most affordable variety, typically $300 to $800, and make excellent starter fish for new arowana keepers. Grading considers scale shine, colour intensity, body shape, fin condition and overall symmetry.
Tank Setup and Dimensions
Asian arowanas grow to 60 to 75 cm in captivity and require tanks of at least 200 cm in length, 60 cm in width and 60 cm in height. A 1,000-litre tank is a practical minimum for a single adult. Many serious keepers in Singapore commission custom tanks or use large fibreglass ponds. In HDB flats, structural considerations become critical at these sizes. Position tanks along external walls or directly over support beams, and consult your town council if uncertain about load limits.
Keep the setup simple. A bare-bottom tank or thin layer of dark substrate, minimal decor and strong overhead lighting that enhances scale colour is the standard approach. Tanning with ketapang leaves or blackwater extract can intensify red colouration in young reds.
Water Quality and Filtration
Maintain a temperature of 28 to 30 degrees Celsius, which Singapore’s ambient climate provides naturally for most of the year. Target a pH of 6.5 to 7.0 and keep ammonia and nitrite at zero. A sump filter with a wet-dry trickle section and a compartment for activated carbon handles the heavy bioload effectively. Change 20 to 30 per cent of the water weekly using aged, dechlorinated PUB tap water. Consistency matters more than perfection. Stable parameters reduce stress and support colour development.
Feeding for Colour and Health
Diet directly influences colour intensity, particularly in reds and golds. Market prawns, centipedes, crickets, mealworms and superworms form the staple diet. For red arowanas, astaxanthin-rich foods like prawns with shells and colour-enhancing pellets such as Hikari Arowana sticks support pigment development. Feed adults once daily or every other day. Overfeeding causes fatty deposits and dulls colour expression. A lean, varied diet produces the most vibrant results over time.
Avoid feeding wild-caught frogs and lizards, which may carry internal parasites. If using live feeders, quarantine them for several days and gut-load with nutritious food before offering them to your arowana.
Colour Development Techniques
Tanning is a common practice among red arowana keepers. This involves keeping the fish in a dark-walled, dark-bottomed tank with minimal lighting for extended periods, which encourages red pigment concentration in the scales. Conversely, golden arowanas benefit from bright overhead lighting to promote metallic shine. Colour development is a slow process, often taking three to five years for a red arowana to reach peak intensity. Genetic quality sets the ceiling, while diet, water quality and lighting determine how close to that ceiling the fish reaches.
Health Concerns
Gill curl, where the gill plate flares outward, is a common condition in captive arowanas. Contributing factors include poor water quality and low oxygen levels. Mild cases may respond to improved conditions, but severe curl often requires surgical trimming by an experienced fish veterinarian. Scale drop, barbel damage and fin injuries from jumping or aggression are other frequent issues. Quarantine new additions and maintain stable water parameters to minimise health problems.
The Long-Term Commitment
Asian arowanas live 20 years or more in captivity. Combined with their significant monetary value and emotional attachment, they represent one of the hobby’s most serious commitments. Before purchasing, ensure you have the space, budget for ongoing maintenance and long-term willingness to care for a fish that may outlive your interest in the hobby. For those who commit fully, few fish deliver the same pride of ownership and visual impact as a mature, well-kept Scleropages formosus.
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