Top 10 Most Expensive Aquarium Fish Roundup: Collector Picks
The trophy end of the hobby is built on rarity, paperwork and patience rather than colour alone. The top 10 most expensive aquarium fish ranked here mix marine collector specimens with the freshwater giants that anchor Asian aquaria. This roundup from Gensou Aquascaping at 5 Everton Park covers what each species costs, why, and what you need to bring one home legally in Singapore. CITES paperwork, AVS permits and microchip requirements are flagged where relevant.
1. Peppermint Angelfish (Paracentropyge boylei)
A deep-water angel from the Cook Islands, regularly cited at USD 30,000-40,000 (roughly SGD 40k-55k). Adult length 7cm. The price stems from collection depth — 100m+ requires mixed-gas diving. Almost never available in Singapore retail; specimens enter the country via private import only.
2. Platinum Asian Arowana (Scleropages formosus)
The white phenotype of the Super Red strain reaches SGD 80,000-400,000 for documented show fish. Adult size 90cm+. Singapore allows ownership with CITES II paperwork and microchip. Iwarna and Polyart broker auction-grade specimens. Feed live prawns and pellets; rear in a 250-litre minimum tank with a 8mm-glass lid because they clear the water surface easily.
3. Polkadot Stingray (Potamotrygon leopoldi)
Black with white spots, freshwater, native to the Xingu. Singapore retail SGD 1,500-15,000 depending on pattern grade and parentage. Disc width 40cm at adulthood, requires 600-litre minimum and stable 26-28°C. Venomous tail spine — keepers occasionally trim the barb tip on captive specimens for safety.
4. Bladefin Basslet (Jeboehlkia gladifer)
Caribbean deep-water reef fish, 4cm adults, USD 5,000-10,000. Almost never seen in Singapore retail. The price is collection depth and fragility during shipment. Owners typically run dedicated 60-litre nano reef systems with chiller and stable 22-24°C — cooler than standard reef.
5. Masked Angelfish (Genicanthus personatus)
Hawaiian deep-water angel, white-bodied with a black face mask on males. USD 15,000-30,000. Captive-bred specimens have started appearing through specialist breeders, dropping prices toward USD 8,000. Adult size 18cm. Available to Singapore importers on commission only.
6. Australian Flathead Perch (Ogilbyina velifera)
Cryptic Australian reef fish in pink and white bands, USD 3,000-5,000. Available irregularly through Cairns Marine. 8cm adults, peaceful, suit 100-litre reef tanks with stable parameters.
7. Zebra Pleco L046 (Hypancistrus zebra)
Banned for export from Brazil since 2004, all current trade is captive-bred. Singapore retail SGD 250-600 for tank-bred juveniles, double for adults. Adult length 10cm, 100-litre tank, stable 28-30°C with strong flow. Slow grower — three years to adult — which is partly why prices stay high.
8. Wrought Iron Butterflyfish (Chaetodon daedalma)
Japanese-endemic butterfly with chainmail-pattern scales. USD 4,000-7,000 wild-caught. 15cm adults, prefer cooler reef tanks at 22-24°C, eat clams and mussels by preference. Specialist Singapore importers stock occasionally.
9. Show-grade Koi (Cyprinus rubrofuscus)
Jumbo Tosai and Sansai grand champions hit SGD 50,000-300,000 at Niigata auction. Adult length 90-100cm. Pond requirement: 8,000+ litres, koi-grade filtration, monthly water changes. Singapore breeders import bloodlines from Sakai, Marudo and Dainichi each spring. Stock a koi-grade pond filter for the ammonia load.
10. Goliath Tigerfish (Hydrocynus goliath)
Congo predator reaching 120cm and SGD 8,000-15,000 for a 60cm imported juvenile. Available occasionally through Iwarna and Polyart on prior order. 1,500-litre minimum tank, live or dead fish diet, stable 26-28°C. Pair with a heavy-duty water testing kit for the ammonia spikes monsters generate.
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5 Everton Park #01-34B, Singapore 080005 · Open daily 11am – 8pm
