I was in the stream last Sunday morning, with some of the best aquatic ecologists around.
John is the longtime president of the Darby Creek Association, and a tireless advocate for the protection of the Darby Creeks. Mac is Franklin County Metroparks' aquatic ecologist, and no one knows the fishes of these streams better than he does. Anthony is freshwater conservation manager for the Ohio Chapter of The Nature Conservancy, and has spent many years working to ensure the conservation of these streams. You can see why I was excited to get afield with these guys, and I greatly appreciate Anthony's orchestration of this expedition.
My primary purpose was to make photos of seldom-seen fish, and seining them out of their riffle, ever so temporarily, is the best way to go about this.
HERE. This time, I put a bit more thought into it, and definitely had better camera gear than before.
I lugged the small aquarium, shown above, out to the stream, and had the bottom of the tank pre-prepped with clean rocks. I even brought along a gallon of fresh distilled water. If you take water from the creek, even if it looks relatively clear, you'll find that all of the suspended sediments drift in the tank's water column and create a somewhat murky look.
So basically you capture fish with the seine, place them in small holding tanks, and place the subjects to be photographed into the modeling tank. After capturing images, the fish is released back into the stream with no harm done.
When the creek water reaches certain temperature parameters in early spring, it stimulates physiological changes in the male darters. They become intensely colored - their breeding plumage, if you will. Darters in spring transform into the warblers of the underwater world, and it was this colorful group of fish that I really wanted to photograph.
I am reasonably pleased with how these photos came out, but upon review see room for improvement. While it may seem like "shooting fish in a barrel", photographing fish in this way isn't as easy it may look. It's hard to keep small bubbles from gathering inside the tank in places where they impinge on the photo. Sometimes reflections from objects outside the tank appear in the photo, although they aren't obvious at the time. Of course, much of this can be corrected with PhotoShop but I am a PS minimalist. Finally, the fish themselves are often less than cooperative, and extended herding and prodding with a long stick is usually necessary to get them into the best position for photos.
Note how she sits on the bottom, propped up on her pectoral fins. Darters are members of the perch family, and most of them largely lack swim bladders. Thus, they sink rather than float. This is an advantage if you feed on the bottom, and wish to stay among the rock cobble of swiftly flowing riffles. If you wade into such a habitat and carefully watch the bottom, you'll probably see darters rapidly darting out of your way. Seen in this way, they just look like tiny black flecks rocketing off. It isn't until one does what we did that their true beauty can be fully appreciated.
I'll post Part II before long, as I've got even flashier photos to share. I am grateful for Anthony, Mac, and John for making this aquatic foray possible.