Northern Pike

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I went fishing with my brother-in-law at a small lake not far from my house and he landed this incredible fish. This fish gets its name from its resemblance to the pole-weapon known as the pike (from the Middle English word for “pointed”).

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Northern Pike average 18-20 inches in length. They can be identified by their single dorsal fin and light-colored spots along their dark body. They are found in a variety of freshwater habitats, from cold deep lakes, to warm shallow ponds, to muddy rivers. They have a broad range of tolerances for water temperature, clarity and oxygen content.

Northern Pike

These are aggressive, solitary fish. They typically lurk, relying on camoflauge and are able to attack quickly. Their eyes are highly movable and are able to see in practically any direction. They are “sit and predators” that usually hide in some type of cover, cocked in an “S” position and ready to strike.

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Northern Pike are equipped with sharp teeth and have very complex skull and jaw structures, enabling them feed on smaller fish, frogs, crayfish, small mammals and birds. These fish are top predators in the systems they inhabit and it was very cool to encounter one in the wild.

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River Chub

River Chub

While exploring this waterway, I saw a few decent-sized torpedo-like fish. I decided to investigate further and catch one. It turned out to be a River Chub. The River Chub is the largest of Ohio’s minnows, occasionally attaining lengths of 12 inches. They are sometimes caught by fisherman.

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Living in rivers and streams, they prefer large amounts of gravel and cobble. These fish are often found hiding around boulders, submerged logs and other structures on riffles and runs.

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These fish deposit eggs on gravel where they construct large circular nests. The nests are occasionally four feet long and are often used for egglaying by other species of fish as well. Male River Chubs can move up to 200 pounds of stones to build the nest.

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River Chub are good indicators of water quality, because of their intolerance of pollution and siltation.

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Stonecat Madtom

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The Stonecat Madtom is the largest species in the group of catfishes known as madtoms. They are the most common of six species of madtoms found in Ohio.

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They are primarily a species found in medium to large rivers in areas with moderately fast current and large boulders and slabs. The Stonecat received its name because of its tendency to hide beneath flat rocks.

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They spend the day hidden and come out at night to feed. At night, stonecats emerge to feed on the many aquatic insects and crayfishes that also occupy these habitats.

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Their flattened body allows them to wriggle beneath large, flat rocks to hide or to seek out food. Stonecats, like the other members of the catfish family, have barbels (whiskers) that are used to help them locate food.

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Stonecat Madtoms serve as indicators of water quality. They are not present in highly polluted areas or areas with a large amount of siltation. Therefore they are a very valuable “indicator” species to humans.

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For some unknown reason, these fish are also good indicators of Smallmouth Bass populations. It seems if there is a good population of Stonecat Madtoms in the area, there will also be a good number of Smallmouth Bass, which was definitely the case on this outing.

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Bluegill

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Bluegill are an important and abundant sport fish in the United States. They are also one of the most common species in Ohio and can be found in almost every body of water throughout the state.

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They are most abundant in clear lakes and ponds that have some rooted aquatic vegetation. They usually hide around and inside old tree stumps and other underwater structures.

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They can grow up to 12 inches long, though they are usually about half this size. They can have beautiful coloring, with deep blue and purple on the face and gill flap, dark olive-colored bands down their sides, and a fiery orange to yellow belly. It is the most common member of the Sunfish Family has a distinctive black spot behind the gills.

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Like other sunfish, Bluegill have very deep and highly compressed bodies. The name “bluegill” comes from the iridescent blue and purple region on their cheeks and gill covers.

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Bluegill eat just about any little animal that will fit into their small mouths, especially aquatic insects and land insects that fall into the water. They are important aquatic predators in the streams and ponds they occupy. In turn they provide food for larger fish.

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Not only does it play a critical role in the freshwater environment it inhabits, this common creature also is an example of the beauty in nature that is all around us, yet very often overlooked.

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Fathead Minnow

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The Fathead Minnow has natural geographic range extends throughout much of North America, from central Canada south along the Rockies to Texas, and east to Virginia and the northeastern United States. This minnow has also been introduced to many other areas via bait bucket releases.

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Though not very “flashy,” being dull olive-grey in appearance, this is a very successful fish. Their tolerance for multiple environmental conditions, characteristics of their life history and their popularity as bait species contribute to their widespread distribution.

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The Fathead Minnow is quite tolerant of turbid, low oxygen water and can most commonly be found in small lakes, ponds and wetlands. They can also be found in larger lakes, streams and other habitats as well.

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The golden (xanthic) strain is known as the “Rosy Red” and is a very common feeder fish sold in the United States. This color version of the fish is also sold in the pet trade.

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Now only is this well-known to fishermen and aquarists, but to science the Fathead Minnow famous for producing Schreckstoff, which is a distress signal. The alarm substance is released when the fish is injured by a predator and can be detected by other Fathead Minnows, which then hide or dash away.

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And if all that wasn’t enough, this species is also important as a biological model in aquatic toxicology studies. Because of its relative hardiness and large number of offspring produced, EPA guidelines outline its use for the evaluation toxicity of aquatic environments. It has been the most widely utilized North American model for ecotoxicology since the mid-twentieth century.

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Averaging only 2-3 inches long, the Fathead Minnow is a little fish with a lot going for it.

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Silver Shiner

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The Silver Shiner is a slender minnow with large eyes. Adults average three to four inches. The body is silvery, with some blue or green iridescence. All of the fins are transparent, with no spots or other distinctive markings.

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Shiners are schooling fish. They feed, travel and spawn sometimes in very large groups. When feeding, the “dimpling” they create may look like raindrops on the water.

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They can often be seen jumping out of the water to capture flying insects at the tail end of deep swift riffles in moderate-sized, clear creeks.

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This fish can be found in large streams and small rivers with clean water flowing over a bed of rocks. They typically avoid muddy bottoms and rooted aquatic vegetation.

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The Silver Shiner is considered to be a minnow. Minnows are a huge family of fishes. About 2,100 species are distributed in North America, Eurasia and Africa.

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Minnows are important food items for other fish species. They are essential in maintaining healthy aquatic systems. While several species of minnows are used as bait fish, the vast majority of them never even receive a passing glance from most humans.

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Smallmouth Bass

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Smallmouth Bass are native to Ohio and are found in every county of the state. They are known for their acrobatic abilities and putting up a very strong fight when caught on hook and line. I caught this one with a net.

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These fish thrive in streams with gravel or rock bottoms with a visible current. They feed primarily on crayfish and other large aquatic invertebrates, but will also feed on small fish and flying insects that fall into the water.

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Despite the common name, their mouth is relatively large, with the upper jaw almost reaching the rear margin of the eye. A distinguishing marking is dark bars which radiate back from the eyes.

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Smallmouth Bass also have dark, vertical bars which are usually green or gray in color. In Ohio, the average adult size is 9-12 inches – this one still has some growing to do.

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Sometimes called a “bronzeback” for its brassy brown hue, the Smallmouth Bass is one of the strongest fish for its weight. The second largest member of the sunfish family, the Smallmouth Bass is only smaller than its cousin, the Largemouth Bass.

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When the railroads spread around the country in the second half of the 19th century, so did the smallmouth. It was transported by train and eventually became a popular sport fish throughout the United States.

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Least Brook Lamprey

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The Least Brook Lamprey is an extremely unlikely-looking fish to encounter in the spring-fed creeks of our state. All lampreys have a long eel-like body and no scales. They have segments of muscles that are visible along their body and a jawless mouth.

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As with all lamprey species, the Least Brook Lamprey spends the majority of its life as a worm-like larva. Larvae live burrowed in the sand at the bottom of a waterway for 3–7 years, feeding on microscopic plant and animal life.

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This fish is found in clear brooks with fast flowing water and either a sand or gravel bottom. Prior to laying eggs, adults construct small nests by picking up pebbles with their oral disk and moving them to form the rims of shallow depressions.

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Adult Least Brook Lamprey cannot eat. Since they have a nonfunctional intestine, they only live for four to six months. Instead of eating, they spend all their time building nests, finding mates and laying eggs so the next generation will be there to carry on.

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Lampreys are a diverse and ancient line of creatures tracing back to over 300 million years ago. Of the many fish species native to Ohio, this is one of the least known, but most interesting.

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Brook Stickleback

Today I encountered a fish that I’ve never seen “in person” before, but I knew exactly what it was. This species is easily identified by the four to six spikes on its back.

The Brook Stickleback has a pugnacious attitude. It aggressively defends its small territory from other fish. Despite its toughness, it is small and only grows to about two inches.

Its unique dorsal fin composed of an average of 5 short, isolated, backswept spines – followed by a more typical-looking back fin. This feature makes it distinguishable from all other Ohio fish.

In Northeast Ohio they can be found in small streams. They prefer cold, clear water with submerged vegetation. Sticklebacks eat tiny aquatic insects and crustaceans. They help control mosquitoes by eating the insect’s larvae.

The Brook Stickleback is a nest building species. Males have the ability to produce mucous from their kidneys, which they use to bind together a nest made out of bits of vegetation.

This fish is proof positive that very cool creatures sometimes come in rather small packages.

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Western Blacknose Dace

Minnows are a huge family of fish. North America has over 230 species – let’s check out a type that lives in my backyard.

The Western Blacknose Dace is a small, slender minnow that grows to about three inches long. During the Winter this fish often wedges itself under rocks, where it is quite sluggish as it patiently waits out the cold weather.

Its species name, atratulus, is derived from a word that means “clothed in black.” Sprinkled along the sides are dark scales that give the fish a spotted appearance. The fish’s most obvious characteristic is its black side stripe. The stripe runs from the snout through the eye, and along the length of the side to the tail.

These fish are creatures of flowing water. Although they thrive in stream pools as well as rocky riffles, they won’t be found in the still water of lakes and ponds. Dace feed on many types of aquatic insects, worms and algae.

During breeding season, the male’s black side stripe transforms into beautiful red-orange hue. Here’s a male that I caught in the Summer. At this time a male will stake out a territory and guard a bit of underwater turf against other male minnows. The male circles the area and seems to “dance” to attract females.

Many fishing lures have been modeled after the Western Black-nosed Dace, because this fish is known to be a favorite prey item for many sport fish, especially trout.

The humble dace is a wonderful river species that inhabits tiny little streams to huge waterways.

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