3 Invasive Fish 1 Crab and 1 Snail

What are the worst invasive fish species? In this video I will be trying to that question and many others you may have about invasive fish species. An invasive species is any plant or animal that has be introduced into an ecosystem where it doesn't belong, normally having negative impacts on native animal and plant species. Invasive fish don't only endanger native fish species but they can also cause millions of dollars worth of damage. Todays video is a little different as I will be going through 3 problem invasive fish species and 1 invasive snail species and 1 invasive crab species. Attributions Tench images: Rawpixel Ltd https://www.flickr.com/photos/vintage... Findmelost https://www.flickr.com/photos/findmel... NYS DEC https://www.flickr.com/photos/nysdec/ George Barker https://www.flickr.com/photos/1599767... ianpreston https://www.flickr.com/photos/9750464... Bernard DUPONT https://www.flickr.com/photos/berniedup/ Biodiversity Heritage Library https://www.flickr.com/photos/biodivl... Tench footage: Jakub Sikora    / @jakub-sikora   Andreas Liljegren    / @andreasliljegren   Brook Trout images: NOAA Great Lakes Environmental Research Laboratory https://www.flickr.com/photos/noaa_gl... NYS DEC https://www.flickr.com/photos/nysdec/ Billy Wilson https://www.flickr.com/photos/billy_w... Chesapeake Bay Program https://www.flickr.com/photos/chesbay... Brook trout images: Derek Wheaton    / @wheatonderek   Burbot images: NYS DEC https://www.flickr.com/photos/nysdec/ NOAA Great Lakes Environmental Research Laboratory https://www.flickr.com/photos/noaa_gl... Rawpixel Ltd https://www.flickr.com/photos/vintage... Kristian Kostov Creative Commons CC0 1.0 Universal Public Domain Dedication Alaska Region U.S. Fish & Wildlife Service https://www.flickr.com/photos/usfws_a... Burbot Footgae: bartys93    / @bartys93   Niklaus Lang    / @niklauslang   Apple snail images: MdE https://de.wikipedia.org/wiki/Benutze... Creative Commons Attribution-Share Alike 3.0 Germany Tony Kafetzis https://www.flickr.com/photos/8887072... Roo Reynolds https://www.flickr.com/photos/rooreyn... Shenghung Lin https://www.flickr.com/photos/shenghu... muzina_shanghai https://www.flickr.com/photos/muzina_... Apple snail footage: OMblack    / @omessence-channel   Red king crab images: Daderot https://commons.wikimedia.org/wiki/Us... Creative Commons CC0 1.0 Universal Public Domain Dedication Det matematisk-naturvitenskaplige fakultet https://www.flickr.com/photos/matnat/ amanda https://www.flickr.com/photos/pinprick/ Michelle Pemberton The Children's Museum of Indianapolis Creative Commons Attribution-Share Alike 3.0 Unported Cutlip minnow image: NYS DEC https://www.flickr.com/photos/nysdec/ Sucker fish image: NYS DEC https://www.flickr.com/photos/nysdec/ Stalin images: Ephraim Stillberg https://commons.wikimedia.org/w/index... Creative Commons Attribution-Share Alike 3.0 Unported Segunda Guerra Mundial https://www.flickr.com/photos/1448909... Brown Trout Image: NYS DEC https://www.flickr.com/photos/nysdec/ Perch Image: NYS DEC https://www.flickr.com/photos/nysdec/ Green River image: Ken Lund https://www.flickr.com/photos/kenlund/ Smallmouth bass image: Rawpixel Ltd https://www.flickr.com/photos/vintage... I have adapted and edited some of these original images. Creative commons licences: https://creativecommons.org/licenses/ For our first invasive fish species we will be travelling to the freshwaters of Europe and Asia as we have the tench. The tench is a very hardy fish that is known for being a very greedy fish. The tench is invasive over some parts of the US and Canada. For our next invasive species we will be heading to the marine waters around northern Europe as we have the red king crab. The red king crab is native to the pacific ocean but was introduced into northern European waters for the fishing industry. For our next invasive fish we will be heading to the waters of north America as we have the brook trout. The brook trout is actually a member of the char family. Even though the brook trout's numbers are in decline in it's native range, they are invasive over other parts of the US. For our next invasive species we will be heading to the freshwaters of south America as we have the apple snail. Apple snails are very popular in aquariums as they both grow very large and they also do a very good job at cleaning up the tank. When fish keepers release them into the wild then soon cause problems as they can reproduce rapidly. Our final invasive fish is the burbot. The burbot is a large predatory fish so it is very able to negatively effect native fish populations.