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Thursday, October 21, 2010
It’s Fall: Time for More Fish!
There are two seasons for fish stocking: spring and fall. Back in the spring we introduced the first batch of fish into the pond at Nature Boardwalk, consisting of bluegill, pumpkinseed and fathead minnows. Now it’s time to introduce the second batch, which includes largemouth bass, the pond’s top predator.
Tuesday the pond was stalked with about 400 largemouth bass, all about 3 inches long. Around 100 bluegill and pumpkinseed were added to the pond as well as an additional 100 pounds of fathead minnows.
The largemouth bass are easy to distinguish from the bluegill and the pumpkinseed, even when they’re all the same size. The bass have long, torpedo-shaped bodies compared to the bluegill and pumpkinseed, which look round in profile and are laterally compressed. The young largemouth bass also have distinctive coloration. They have speckles on their backs, light undersides and a dark line of speckles down their sides.
The fish were introduced into the pond via a tube from their holding tanks. This minimizes handling time and stress on the fish. Within 15 minutes, the pond had hundreds of new occupants.
Nature Boardwalk at Lincoln Park Zoo
By transforming the South Pond into Nature Boardwalk, Lincoln Park Zoo has created an urban ecosystem in the heart of the city. Enjoy a virtual view as native plants and animals establish themselves in this rare refuge.
As Lincoln Park Zoo’s director of horticulture, Brian oversees the zoo’s gardens, from bud to bloom.
As coordinator of wildlife management, Mason chronicles the bugs, birds, fish, insects, mammals and more that make their homes at Nature Boardwalk.
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