1 / 10

By Ryan Double April 2013

Longfin Eels. By Ryan Double April 2013. Eel Name. Common name Longfin Eel Scientific name Anguilla Diffenbachii Family name Anguillidae Maori name Tuna Kuwharuwharu. Description. Long slender tubular fish With scales, fins and it’s slimy Colouring - dark brown to gray-black

pierce
Download Presentation

By Ryan Double April 2013

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Longfin Eels By Ryan Double April 2013

  2. Eel Name • Common name Longfin Eel • Scientific name Anguilla Diffenbachii • Family name Anguillidae • Maori name Tuna Kuwharuwharu

  3. Description • Long slender tubular fish • With scales, fins and it’s slimy • Colouring - dark brown to gray-black • Length - average 1.2 metres - up to 2 metres • Weight - average 10kg - up to 50kg • Its top fin is longer then its bottom fin

  4. Food • Small fish, insects, worms and snails • When they are older freshwater crayfish and baby ducks

  5. Predators • Overall man is the only predator by: • Fishing • Chemical discharges into rivers • Introducing trout and salmon (eat baby eels) • Changes to eel’s habitat eg lower waters levels, bank erosion • Weed removal

  6. Life Cycle • Adult eels lay eggs at sea then die • Fertilised eggs hatch to larvae & float back to land • When larvae reach land they become glass eels • They then turn into elver so to swim up rivers • Elvers turn into adult eels

  7. Adaptive Features • Slime covers their skin - helps them breath when out of water - keeps skin moist when out of water • They have bad eye site but amazing smell • They have sensors around the lips • They have rows of small sharp teeth that point backwards • They have scales embedded in their skin

  8. Habitat • Fresh water rivers & lakes • Found inland • Shady pools & willow lined creeks • Flowing water & stony river beds

  9. Bibliography • http://en.wikipedia.org/wiki/New_Zealand_longfin_eel • http://www.doc.govt.nz/conservation/native-animals/fish/facts/eel/ • http://www.longfineel.co.nz/longfin-tuna/ • http://www.nhc.net.nz/index/fresh-water-fish-new-zealand/longfin-eel/longfin-eel.htm • http://www.rangitane.iwi.nz/education/attachments/169_tuna_vweb.pdf

  10. These eels are at risk so we should respect them and their habitat. Before they become extinct. Think about what you can do. The End

More Related