When did the first fish appear in the fossil record?
singleAnswer
about 530 million years ago 530 million years ago
Evolution of fish
fish fossil
Evolution of fish Coelacanth Knightia Tiktaalik Fish egg fossil Xiphactinus Placodermi Lists of prehistoric fish Leedsichthys Green River Formation
The first <b>fossil fishes</b> that were discovered were ostracoderms. The Swiss 
anatomist Louis Agassiz received some <b>fossils</b> of bony&nbsp;... The coelacanths constitute a now-rare order of <b>fish</b> that includes two extant 
species in the ... The coelacanth was long considered a &quot;living <b>fossil</b>&quot; because 
scientists thought it was the sole remaining member of a taxon otherwise known 
only&nbsp;... A small schooling <b>fish</b>, Knightia made an abundant food source for larger Eocene 
predators. The Green River Formation has yielded many <b>fossils</b> of larger <b>fish</b>&nbsp;... The <b>fossil</b> discovered in 2004 did not include the rear fins and tail. It had rows of 
sharp teeth indicative of a predator <b>fish</b>, and its neck could move independently&nbsp;... <b>Fish</b> egg <b>fossils</b> are the <b>fossilized</b> remains of <b>fish</b> eggs. <b>Fossil fish</b> eggs have an 
extensive record going at least as far back as the Devonian and spanning into&nbsp;... Sternberg&#39;s most famous <b>fossil</b> find. Species of Xiphactinus were voracious 
predatory <b>fish</b>. At least a dozen specimens of X. audax have been collected with 
the&nbsp;... Placodermi is a class of armoured prehistoric <b>fish</b>, known from <b>fossils</b>, which lived 
from the Silurian to the end of the Devonian period. Their head and thorax&nbsp;... Prehistoric <b>fish</b> are early <b>fish</b> that are known only from <b>fossil</b> records. They are the 
earliest known vertebrates, and include the first and extinct <b>fish</b> that lived&nbsp;... The <b>fossils</b> found by Leeds gave the <b>fish</b> the specific epithet problematicus 
because the remains were so fragmented that they were extremely hard to 
recognize&nbsp;... <b>Fish fossils</b> of Diplomystus and Knightia are found in Fossil Lake but not in Lake 
Gosiute. Only Lake Gosiute has fossils of catfish (Ictaluridae and Hypsidoridae)&nbsp;...
530 million years ago
Evolution of fish