World Library  
Flag as Inappropriate
Email this Article

Predatory fish

Article Id: WHEBN0024518242
Reproduction Date:

Title: Predatory fish  
Author: World Heritage Encyclopedia
Language: English
Subject: Diversity of fish, Coastal fish, Vision in fishes, Fishing down the food web, Digital Fish Library
Collection: Carnivorous Animals, Ichthyology
Publisher: World Heritage Encyclopedia

Predatory fish

Predatory fish are fish that predate upon other fish or animals. Some predatory fish include perch, muskie (muskellunge), pike, walleye, and salmon.

Levels of large predatory fish in the global oceans were estimated to be about 10% of their pre-industrial levels by 2003.[1] Large predatory fish are most at risk of extinction; there was a disproportionate level of large predatory fish extinctions during the Cretaceous–Paleogene extinction event 66 million years ago.[2] Creation of marine reserves has been found to restore populations of large predatory fish such as the Serranidaegroupers and sea bass.[3]

Predatory fish switch between types of prey in response to variations in their abundance. Such changes in preference are disproportionate and are selected for as evolutionarily efficient.[4]

Predatory fish may become a pest if they are introduced into an ecosystem in which they become a new top predator. An example, which has caused much trouble in Maryland and Florida, is the snakehead fish.[5]

Predatory fish such as sharks and tuna form a part of the human diet, but they tend to concentrate significant quantities of mercury in their bodies if they are high in the food chain, especially as apex predators, due to biomagnification.[6]

Predators are an important factor to consider in managing fisheries, and methods for doing so are available and used in some places.[7]

See also


  1. ^ Myers, Ransom A.; Boris Worm (15 May 2003), "Rapid worldwide depletion of predatory fish communities", Nature (Macmillan) 423 (6937): 280–283,  
  2. ^ "Study unravels why certain fishes went extinct 65 million years ago". eScienceNews. 26 March 2009. Retrieved 2009-09-30. 
  3. ^ Garry R. Russ, Angel C. Alcala (2003), "Marine Reserves: rates and patterns of recovery and decline of predatory fish, 1983–2000", Ecological Applications 13 (6): 1553–1565,  
  4. ^ WW Murdoch, S Avery, MEB Smyth (1975), "Switching in predatory fish", Ecology (Ecological Society of America) 56 (5): 1094–1105,  
  5. ^ US acts over predatory fish, BBC, 23 July 2002 
  6. ^ Definition of predatory species of fish to which the higher level of methyl mercury applies, Food and Agriculture Organization of the United Nations, 6 May 1994 
  7. ^ Methods to consider predators in fishery management, The Pew Charitable Trusts, 7 May 2013 

External links

  • Predatory fish on
  • Predator fish in oceans on alarming decline, experts say Washington Post, 21 February 2011.
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.