1. Fish Friday #3 - October 10, 2008
1. Test Details
2. Sign Up for Paper Topics - Due on 10/27
3. Protacanthoperygii - Dustin & Ryan
4. Stenopterygii & Cyclosquamata

2. Test #1 Details
Overall Average = (SD) --> 87.4%
However, differences between grads and undergrads.
Grad Mean = (SD) --> 97.4%
Undergrad Mean = (SD) --> 82.0%

3. Where we are in the big scheme.

4. Sternopterygii
- bristlemouths, marine hatchetfish, light fishes, barbeled dragonfishes, jellynose fish
bristlemouth
barbeled dragonfish or viperfish
jellynose fish

5. bristlemouths -most numerically dominant group in terms of numbers
of individuals of any vertebrate
- large mouths that extend past
the eye
-elongate, but not compressed
-have numerous small teeth, but
also fine gill rakers -- can eat
both fish and smaller zooplankton

6. hatchetfish
-photophores point down and are thought to function in countershading
-males may use them in mating
-thinness makes them hard to see head on
-also very abundant
-move up and down in water column

7. hatchetfish

8. -lures often bioluminescent thought to be involved in hunting
barbeled dragonfish
-lures often bioluminescent thought to
be involved in hunting
-large, fang-rich mouths allow them to eat
fish bigger than themselves
Dragonfish
Loosejaws
Marine hatchefish

9. more barbeled dragonfish,
loosejaws, viperfish
(same group)

10. Cyclosquamata -Cyclosquamata means “circle scales”.
-telescopefishes, greeneyes, tripodfish, lizardfish, daggertooth, lancetfishes
- group is united by unique structures in the gill arches and pelvic girdle
- swimbladder is usually absent

11. tripod fish
- elongate pectoral, pelvic,
and caudal rays
- used to rest on the bottom
-deep sea

12. daggertooth
- many fish families in this group
are similar (barracudinas, sabertooth)
-extremely large jaws and teeth
- important in marine food chains
eat smaller fish, but are
themselves eaten by tuna and swordfish

13. lancetfish
- large, sail-like dorsal fin
-large (up to 2m) - most
others in this group are small
-lots of teeth in big mouth

14. lizardfish
- benthic fishes (live on bottom)
- most found in shallow water
2 sp. are deep
- common around coral reefs
- sit and wait, ambush predators