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Percomorpha
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<p>Percomorpha is an extremely large and diverse <a href="/facts/Clade/XefyYmWn">clade</a> of <a href="/facts/Ray-finned_fish/3PNaXXmJ">ray-finned fish</a>. With more than 17,000 known species (including <a href="/facts/Scombroidei/CFbkzQ4o">tuna</a>, <a href="/facts/Syngnathiformes/Q6fVGHfS">seahorses</a>, <a href="/facts/Gobies/DVTzCgGI">gobies</a>, <a href="/facts/Cichlidae/xNuA9o1a">cichlids</a>, <a href="/facts/Flatfish/DMVK2f8g">flatfish</a>, <a href="/facts/Labridae/gleyUjKA">wrasse</a>, <a href="/facts/Perciformes/DJeXbX7W">perches</a>, <a href="/facts/Lophiiformes/oTpyBSjS">anglerfish</a>, and <a href="/facts/Tetraodontiformes/e65czV4A">pufferfish</a>) known from both marine and freshwater ecosystems, it is the most speciose clade of extant <a href="/facts/Vertebrate/tT54FSTT">vertebrates</a>. </p>