Largetooth sawfish are listed as critically endangered. The sawfish had been kept in aquariums for conservation. However, once the sawfish were released, it was hard to track their progress. Recently, ten sawfish were tracked in a study to see what happened when the sawfish were released after being in aquariums versus sawfish that were in the wild. Five sawfish were caught, tagged and immediately released, where as the other five were placed in an aquarium for 6 months, then tagged and released. The wild sawfish would swim with the current over 90 percent of the time. However, initially, the aquarium sawfish would swim against the current. After 24 hours, the aquarium sawfish also began to swim with the current. Its important to keep studying and tracking this marvelous fish, with hopes we can get them out of the critically endangered status and use aquariums for a conservation purpose to aid in this process. MORE
Francis is a marine biologist with an MBA and over 20 years of professional aquarium experience. Francis is the former Aquatic Development Manager at Hagen USA., makers of Fluval brand aquarium products. He co-stars on Nat Geo WILD's reality TV series Fish Tank Kings where he is the resident "Fish Geek" and was Director of Marketing at Living Color Aquariums. He is an avid explorer having visited over 45 countries and lived in 7. At 17, he was among the youngest aquarists ever hired by the Vancouver Aquarium, where he worked for 7 years. His aquatic biology experience ranges from larval fish rearing to the design, construction and operational management of renowned public aquariums around the world. Francis is currently head of marketing at the world's largest vertically integrated fish farming company.