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November 7, 2008 - Fish Friday Notes: Please read the Goodman paper for Monday. It is on the web. Guest speaker, Chris Cheng, will be talking about how.

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Presentation on theme: "November 7, 2008 - Fish Friday Notes: Please read the Goodman paper for Monday. It is on the web. Guest speaker, Chris Cheng, will be talking about how."— Presentation transcript:

1 November 7, Fish Friday Notes: Please read the Goodman paper for Monday. It is on the web. Guest speaker, Chris Cheng, will be talking about how fish survive in cold water.

2 Rockfishes, scorpionfishes, sculpins,
Scorpaeniformes Rockfishes, scorpionfishes, sculpins, lumpfishes, many other common names 24 families, 1300 species Mostly shallow water, marine All possess a suborbital stay Suborbital stay - ridge of bone on cheek

3 rockfishes, scorpionfishes, lionfish & stonefish
- strong venom in spines - internal fertilization - viviparous young - rockfishes can be quite old -- oldest fish was 205 years old -- others between years -- most don’t live that long, but year old fish not uncommon Known as rockfish in more Northern waters, scorpion fish in South rockfish scorpionfish

4 Scorpaeniformes rockfish scorpionfish lionfish stonefish
Lionfish thought to be most toxic, but it is the stonefish Strongest toxin of any fish, neurotoxin - will disable nerve function and muscle contraction will kill you at high enough doses lionfish stonefish

5 Scorpionfish Video http://www.youtube.com/watch?v=Uf-8JZ3Rz2A

6 searobins & gurnards searobins gurnard very large pectoral fins
- probe the bottom and rest on them - large, muscular swimbladder for sound production - bottom dwellers

7 Flying Gurnard

8 Flying Gurnard Video

9 Scorpaeniformes Cottidae - one of three freshwater families in order, found North America, Europe, and Asia - males provide parental care >300 species in the family -lack a swimbladder -large pectoral fins -sit on bottom -like the current or areas with high turbulence Cottidae - two species found in Illinois streams

10 Jeff and the Catch Sculpin from Berring Sea

11 Synbranchiformes - swamp eels & spiny eels

12 swamp eel

13 Swamp Eel Video


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