File 0001/2026 · Re: Ambystoma mexicanum · Appendix II
Critically endangered in the canal, overpopulated in the tank, and paperwork for both
Since 1975 the axolotl has been listed on CITES Appendix II, the convention that regulates international trade in threatened species. Since 2006 the IUCN has classed it as critically endangered. So far, so good: an animal in trouble, and a system looking after it.
Now look at where the axolotls actually are.
| In Xochimilco | In a fish tank | |
|---|---|---|
| Numbers | Few and falling. Surveys went from thousands per km² in the nineties to a few dozen | Hundreds of thousands, maybe millions, in labs and homes worldwide |
| Real threat | Polluted water, urban sprawl, carp and tilapia eating the eggs | The owner forgetting to change the water |
| Exposure to international trade | Practically none | All of it |
| Paperwork needed to cross a border | The same | The same |
CITES doesn't distinguish much between an axolotl born in a canal and one born in the tenth generation of an aquarium in Germany. A captive-bred Appendix II specimen still needs an export permit or a certificate of captive breeding. The European Union, just in case, put it on its Annex B, so it also wants an import permit.
A lab population 160 years old
Nearly every lab axolotl in the world descends from about 34 animals shipped to Paris in 1864. A century and a half of closed breeding. In the sixties they were also crossed with tiger salamanders, and today lab axolotls carry another species' DNA in their genome.
In other words: the tank axolotl hasn't come from Xochimilco in 160 years, will never go back to Xochimilco, and genetically isn't even entirely a Xochimilco axolotl. Yet it travels under the same procedure designed to protect the ones in Xochimilco.
If the wild axolotl had a say, it would probably ask for clean water before another stamp in its distant cousin's passport.
What the paper protects
The system's argument is reasonable: without trade controls, someone could take wild specimens and sell them as captive-bred. The problem is that for axolotls that incentive barely exists. A bred axolotl is cheap, docile, comes in colors you don't see in the wild (every pink leucistic on Earth descends from a single white male caught in 1863), and there's no market for dark, skinny, difficult wild ones.
Meanwhile, what actually kills wild axolotls, polluted canals and introduced fish, isn't fixed by export permits. It's fixed by treatment plants, chinampas and people working on site. And none of that comes with a stamp.
The sum nobody does
Every hour a breeder spends filling out a permit, every hour an official spends reviewing it, every shipment from a regeneration lab waiting weeks at customs, is time and money that never reaches the canal. The procedure protects the procedure.
This isn't about giving up on the ones still in the wild. It's about controlling where there's something to control: in Mexico, the only place on Earth a wild axolotl can come from. Outside Mexico, and especially with an albino whose colour isn't even axolotl, the question is simple: does this form save a single axolotl? No. So the form is what should be endangered (see the proposal).
File away
Sources: CITES Appendices (cites.org); IUCN Red List, Ambystoma mexicanum; Regulation (EC) 338/97, Annex B; Woodcock et al. (2017), Identification of mutant genes and introgressed tiger salamander DNA in the laboratory axolotl, Scientific Reports.