Smalltooth Sawfish (Pristis pectinata)
Photo: Florida Fish and Wildlife Conservation Commission
Did You Know?
· Smalltooth sawfish were the first "elasmobranchs" to be listed under the ESA.
The largetooth sawfish (Pristis perotteti) is another endangered species of sawfish.Species Description
|Weight:||770 pounds (350 kg)|
|Length:||18-25 ft (5.5-7 m)|
|Appearance:||known for their "saws," long, flat snouts edged with pairs of teeth|
|Diet:||mostly fish, but also crustaceans|
|Behavior:||"ovoviviparous", meaning the mother holds the eggs inside of her until the young are ready to be born|
Sawfish, like sharks, skates and rays, belong to a group of fish called elasmobranchs, whose skeletons are made of cartilage. Sawfish are actually modified rays with a shark-like body and gill slits on their ventral side.
Early sawfish arose around 100 million years ago, but these first sawfish are actually distant cousins to modern day sawfishes, though even the modern sawfish we know today first appeared around 56 million years ago.
Sawfish get their name from their "saws"--long, flat snouts edged with pairs of teeth which are used to locate, stun, and kill prey. Their diet includes mostly fish but also some crustaceans.
The smalltooth sawfish is one of two species of sawfish that inhabit U.S. waters. Smalltooth sawfish commonly reach 18 ft (5.5 m) in length, though they may grow to 25 ft (7 m). They weigh about 770 pounds (350 kg) on average.
Little is known about the life history of these animals, but they may live up to 25-30 years, maturing after about 10 years.
Like many elasmobranchs, smalltooth sawfish are ovoviviparous, meaning the mother holds the eggs inside of her until the young are ready to be born, usually in litters of 15 to 20 pups.
Smalltooth Sawfish Critical Habitat
(click for larger view PDF)
Sawfish species inhabit shallow coastal waters of tropical seas and estuaries throughout the world. They are usually found in shallow waters very close to shore over muddy and sandy bottoms. They are often found in sheltered bays, on shallow banks, and in estuaries or river mouths. Certain species of sawfish are known to ascend inland in large river systems, and they are among the few elasmobranchs that are known from freshwater systems in many parts of the world.
NMFS designated critical habitat for smalltooth sawfish in September 2009 (74 FR 45353).
Smalltooth sawfish have been reported in the Pacific and Atlantic Oceans and in the Gulf of Mexico. However, the U.S. population is found only in the Atlantic Ocean and Gulf of Mexico. Historically, the U.S. population was common throughout the Gulf of Mexico from Texas to Florida, and along the east coast from Florida to Cape Hatteras.
The current range of this species has contracted to the peninsula of Florida, though smalltooth sawfish are common only in the Everglades region at the southern tip of the state. No accurate estimates of abundance trends over time are available for this species. However, available records, including museum records and anecdotal fisher observations, indicate that this species was once common throughout its historic range and that smalltooth sawfish have declined dramatically in U.S. waters over the last century.
There are few reliable data available for this species, and no robust estimates of historic or current population size exist. However, available data indicate that the species' distribution has been reduced by about 90%, and that the population numbers have declined dramatically, perhaps by 95% or more.
|Smalltooth sawfish entangled in fishing line|
Photo: © Florida Museum of Natural History
- bycatch in various fisheries, especially in gill nets
- Because adults can grow very large, and potentially damage fishing gear or even pose a threat to fishermen, many incidentally captured sawfish were killed before they were removed from fishing gear, even if the fishermen had no interest in keeping them.
- loss of juvenile habitat
- juvenile sawfish use shallow habitats with a lot of vegetation, such as mangrove forests, as important nursery areas. Many such habitats have been modified or lost due to development of the waterfront in Florida and other southeastern states. The loss of juvenile habitat likely contributed to the decline of this species.
NMFS convened the Smalltooth Sawfish Recovery Team , comprising sawfish scientists, managers, and environmental managers, to develop a plan to recover the U.S. DPS of smalltooth sawfish. The team published the final recovery plan [pdf] in January 2009. The plan recommends specific steps to recover the DPS, focusing on reducing fishing impacts, protecting important habitats, and educating the public. The draft recovery plan had been made available for public comment in August 2006.
Under the Endangered Species Act (ESA), it is illegal to catch or harm an endangered sawfish. However, some fishermen catch sawfish incidentally while fishing for other species. NMFS and the Smalltooth Sawfish Recovery Team have developed guidelines to fishermen [pdf] telling them how to safely handle and release any sawfish they catch.
Some states have taken additional step to protect this species: Florida, Louisiana, and Texas have prohibited the "take" of sawfish. Florida's existing ban on the use of gill nets in state waters is an important conservation tool. Three National Wildlife Refuges in Florida also protect their habitat.
All sawfish (Pristidae) species are listed on Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) except P. microdon, which is on Appendix II. Appendix I limits international trade in species to exceptional circumstances only.
The IUCN Red List lists the smalltooth sawfish as critically endangered.
The smalltooth sawfish was added to the candidate species list in 1991, removed in 1997, and placed back on the list again in 1999. In November 1999, NOAA's National Marine Fisheries Service (NMFS) received a petition [pdf] from the Ocean Conservancy (formerly the Center for Marine Conservation) requesting that this species be listed as endangered under the ESA.
NMFS completed a status review [pdf] in December 2000 (note: Appendix A of the status review [pdf] is best printed on 11x17" paper). On April 16, 2001, NMFS published a proposed rule to list the U.S. distinct population segment (DPS) of this species as endangered. On April 1, 2003, NMFS published a final rule listing this DPS as an endangered species under the ESA.
NMFS published the final recovery plan [pdf] [2.4 MB] in January 2009.
|90-day finding on petition to list the non-ESA-listed population(s)||76 FR 12308||03/07/2011|
|5-Year Review for U.S. DPS||10/2010|
|Final Critical Habitat||74 FR 45353||09/02/2009|
|Final Recovery Plan||74 FR 3566||01/21/2009|
|Proposed Critical Habitat||73 FR 70290||11/20/2008|
|5-Year Review Initiated for U.S. DPS||73 FR 29482||05/21/2008|
|Draft Recovery Plan||71 FR 49418||08/23/2006|
|ESA Listing Rule for the U.S. DPS||68 FR 15674||04/01/2003|
|Proposed Endangered Status for U.S. DPS||66 FR 19414||04/16/2001|
|Status Review Report
(Note: Appendix A is best printed on 11x17" paper)
|90-Day findings for a Petition to list North American populations of smalltooth sawfish and largetooth sawfish as endangered under the ESA||65 FR 12959||03/10/2000|
|Petition to list North American populations of sawfish (Pristis pectinata and Pristis perotteti) as endangered||n/a||11/30/1999|
- International Efforts for Sawfish Recovery
- Sawfish Recovery Team Page at the Florida Museum of Natural History
- Adams, W. F. and C. Wilson. 1995. The status of the smalltooth sawfish, Pristis pectinata Latham 1794 (Pristiformes: Pristidae) in the United States. Chondros 6:1-5.
Updated: February 27, 2013