By Maxwell Radwin MEXICO CITY — The trafficking of valuable fish bladders found in Mexico appears to be on the rise online and on social media, and it’s having a ripple effect on other endangered species in the region. Dried swim bladders, or “maw,” of totoaba, an endangered fish found in the Gulf of California in northern Mexico, are being increasingly trafficked on digital platforms, according to a report from the Environmental Investigation Agency (EIA), an environmental NGO. The demand for totoaba has impacted other animals that get caught in the same gillnets, most notably vaquitas, the s…