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Step 1
Notice the fish's facial coloring, namely its black lips.
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Step 2
Observe the coloring on the Yellow Perch's fins--the bottom fins are yellow and all other fins are mostly green with yellow accents.
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Step 3
Look for yellow and green tiger striping over most of its body.
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Step 1
Watch for a silvery overall appearance with yellowish fins and tail.
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Step 2
Notice that there are no spots, chin barbels or prominent canine teeth at the tip of the upper jaw.
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Step 3
Check the size of the fish; it should measure between 4 to 6 inches, but can grow as long as 10 inches.
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Step 1
Look for a slender, cylindrical shape with a large mouth and wide tail.
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Step 2
Notice that the fish's overall color is tan with brown vertical blotches and full length horizontal lines of blue and orange.
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Step 3
Measure the fish to see it if is an average size of 6 to 8 inches, but no more than 12 inches long.








