For fishermen in Malaysia, accidentally catching a seahorse is like getting a cash bonus. They can sell one of these tiny, odd-looking fish at the dock in exchange for roughly enough cash to buy a pack of cigarettes.<\/p>\n
It\u2019s not quite as lucrative as hauling in a prize tuna, but a seahorse is worth enough that fishermen can remember each time they caught one\u2014which helped University of California, Santa Barbara, researcher Julia Lawson discover that millions more seahorses may be caught annually than make it into official reports<\/a>.<\/p>\n Fishermen worldwide sold an annual average of 5.7 million seahorses from 2004 to 2011, according to the Convention on the International Trade of Endangered Species. Data from government agencies, surveys, and field interviews with fishermen that were conducted in 22 countries between 1989 and 2013, revealed to Lawson and her colleagues that the annual by-catch of seahorses\u00a0is probably closer to 37 million\u2014more than a six-fold increase, which accounts\u00a0for seahorses that are discarded or sold in domestic trades (which CITES does not record).*\u00a0The demand for seahorse is tied to its popularity in traditional medicine for treating virility problems.<\/p>\n \u201cWhat struck us is [that] people were telling us, \u2018I\u2019m catching one [seahorse] a day; what does that matter?\u2019\u201d Lawson says. \u201cBut when you think of the scale of the fisheries, they\u2019re extracting a huge number.\u201d<\/p>\n What this means for seahorses is grave. Restrictions on their trade are already often ignored, and anecdotal evidence suggests population numbers are dropping. Yet Lawson thinks the bigger takeaway is what the rampant seahorse by-catch probably means for other small fish.<\/p>\n Seahorses are a charismatic and easily identifiable species, and are more likely to stick out in fishermen\u2019s minds. If the unintentional by-catch of seahorses can scale up to tens of millions every year, the same is probably true for other small, though less-memorable, fish species that occasionally turn up in nets.<\/p>\n \u201cMost small fish just look like a grey fish, so they blend together in the minds of fishermen,\u201d Lawson says. \u201cSeahorses are potentially symbolic of a whole bunch of brown and silver fish nobody really pays attention to.\u201d<\/p>\n Lawson will next investigate how to reduce small-fish by-catch in developing countries through community-based management. These regulation schemes often grant a group of fishermen exclusive access to an area, motivating them to take better care of it.<\/p>\n