Regulated or Protected Aquarium Fish: What to Check Before You Buy
The vast majority of aquarium fish sold in Europe carry no particular regulation, but a small number of species are protected under CITES and EU Regulation 338/97: this includes the Asian arowana (Scleropages formosus) and every seahorse of the genus Hippocampus. A landmark study by Amanda Vincent on the international seahorse trade (research on Google Scholar) documented the scale of that trade and helped drive their listing on CITES Appendix II in 2004. Find all our pointers on the fishkeeping hub and in the travel and safety section.
Which aquarium fish species are regulated?
The Asian arowana is the strictest case: listed on CITES Appendix I for wild populations, it can only be sold live in Europe if captive-bred at a certified farm, microchipped, and accompanied by an intra-Community certificate (ICC). Seahorses fall under Appendix II: sale remains possible, but with documented tracking of the trade.
What does this listing actually change for a buyer?
For an arowana, an owner must be able to produce the chip number and the ICC for the animal at any time, including in case of inspection or resale. For seahorses, most of the regulatory burden falls on the professional seller, who must be able to prove the legal origin of their supply.
How do you check before buying?
Always ask for a detailed invoice stating the species' scientific name, and for CITES-listed species, require the origin document (ICC or breeder's certificate) before paying. A serious seller provides it without hesitation; a vague answer should raise a flag, as should an unusually low price for a protected species. The asking price itself can also be a clue, see our guide how much does an aquarium fish cost.
What's the risk of buying a non-compliant fish?
Keeping a CITES-listed animal without the required paperwork can lead to seizure and administrative penalties, even for a buyer acting in good faith. Beyond the legal risk, it also fuels a trade that puts direct pressure on already fragile wild populations.
- Check the exact scientific name of the species before buying, not just its common name
- For the Asian arowana, require a microchip and an intra-Community certificate (ICC)
- For seahorses, favour a seller who can prove the legal origin of their supply
- Keep the invoice and CITES paperwork for as long as you keep the animal
Frequently asked questions
Are goldfish or guppies regulated?
No, they are common species with no protected status and are freely traded.
Can you legally own an Asian arowana in Europe?
Yes, provided it was captive-bred at a certified farm, is microchipped, and comes with its intra-Community certificate.
What if the seller provides no paperwork?
Don't buy: without an origin document for a regulated species, the animal is likely non-compliant.
This guide is part of Planète Pets’s Fishkeeping universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.