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