Just not feasible
Re: "Chemical solution", (PostBag, July 25) and "Halting tilapia invasion 'a priority'", (BP, July 23).
First let me say that the use of rotenone to control invasive fish species is not feasible due to its toxic properties -- it is harmful to humans, animals, and lethal to fish and insects, while remaining active for up to four weeks in the environment.
Second, after reviewing Thailand's Department of Fisheries website, it is apparent that its primary focus has been on illegal, unreported, and unregulated (IUU) fishing for decades, and its capacity to use modern genomic methods to control invasive species has not been developed.
Compare this with the US National Fish Hatchery System, which raises and stocks 100 million fish each year "to support the recovery and restoration of imperilled species, recreational fishing, and Tribal subsistence fisheries. National fish hatcheries use aquaculture to raise threatened, endangered, or at-risk species in a safe captive environment for eventual release into a natural setting. This work, along with habitat restoration and other federal protections, can help boost and support wild populations of fish and aquatic wildlife."
The fish and seafood market in Thailand is valued at US$8.57 billion (300 billion baht) in 2024.
Surely, this would justify the Thai Fisheries Department's establishment of a state-of-the-art aquaculture and genomics facility on a large site capable of adequately fighting the ever-present hazards of invasive species and protecting national resources.