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Fish Evolution. Part 1. stout infantfish. “pedomorphic”. The Competition. Paedocypris progenetica (Cyprinid - Sumatra) Stout Infantfish. Anglerfish. 6.2 mm long male. Photocorynus spiniceps 46 mm long female. Leedsichthys problematicus 155 million years ago: 72 Feet!. Whale Shark.
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Fish Evolution Part 1
The Competition Paedocypris progenetica(Cyprinid - Sumatra)Stout Infantfish
Anglerfish 6.2 mm long male Photocorynus spiniceps 46 mm long female
30,000 Fish Species
Mammals 4059 Birds 8750 Fish 23,700 Reptiles 5700 Amphibs 3750
The ship emits sound waves that reflect off the sea bottom and go back to the ship. Instruments on the ship measure how long the round trip took and compute the distance traveled. S. S. Ichthyology
At night, the sound waves bounce off the layer of lantern fish and instruments on the ship are fooled into thinking that the ocean is shallow S. S. Ichthyology
Artesian wells flow without being pumped. Fish living 450 feet underground are sucked out of their homes by the well. 450’
Trogloglanis pattersoni The fish are found in outflow from wells that penetrate the Edwards Formation between 402 m at the Artesia well and 582 m at the O.R. Mitchell. These are flowing artesian wells having considerable artesian pressure. Considering the amount of change in these species when compared to other species in their families, it seems logical to postulate that they found their way into the aquifer in prepleistocene times, perhaps as a means of escaping the colder temperatures on the surface.
Natron Tilapia Alcolapia alcalicus 40 C
#1: Because there are so many different places for fish to live !
Fish Evolution • First Fishlike Animals 640 mya • First True Fish 460 mya • First Reptiles 300 mya • First Mammals 200 mya
Evolution 101
Reproduction Stretching
If you cut off a finger, do you produce 9-fingered babies? NO!
T C C T A A C G A A T A G A G C A G T G A G A G G A A C T C T A T G T G C C T C T C T T G A T C T A T G T A T G C A A G C A T C C T A C G A A G A G C G T G A G A G G A A C T C T A T G T G C C T C T C T T G A T C T A T G T A T G C A A G C A T C C T A A C G A A T A G A G C A G T G A G A G G A A C T C T A T G T G C C T C T C T T G A T C T A T G T A T G C A A G C A Random DNA Damage in sperm Correct Repair
T C C T A A C G A A T A G A G C A G T G A G A G G A A C T C T A T G T G C C T C T C T T G A T C T A T G T A T G C A A G C A T C C T A C G A A G A G C G T G A G A G G A A C T C T A T G T G C C T C T C T T G A T C T A T G T A T G C A A G C A T C C T G A C G A A T A G A G C A G T G A G A G G A A C T C T A T G T G C C T C T C T T G A T C T A T G T A T G C A A G C A Random DNA Damage in sperm Incorrect Repair
T T C C C C T T A G A A C C G G A A A A T A T A G G A A G G C C A A G G T G T G A A G G A A A G A C G T C G G A A C T C T A T A T G T G C T G T G C C C T T C C T T C T T C T T G A G A T T C C T A T A T G T G T A T A T T G G C A A C A A G G C C A A DNA Protein from correctly repaired gene:FRKCDWIGDR DNA Protein from incorrectly repaired gene:FRKCDTIGDR