Fish diurnal

Brook Silverside

Labidesthes sicculus

A shimmering, translucent wonder of North American waterways, the Brook Silverside is famous for its 'beak' and its habit of skipping across the water's surface like a silver needle.

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Quick Identification

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Size

2 to 4 inches (5 to 10 cm) in length; rarely exceeds 5 inches (13 cm). Weighs only a few grams.

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Colors

Translucent greenish-yellow body with a distinct, brilliant silvery stripe running horizontally along each side; pale or white underside.

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Key Features

Slender, elongated body with a translucent appearance
Distinctive long, beak-like snout with an upward-pointing mouth
Two dorsal fins, with the first being significantly smaller and further back than most fish
Bright, shimmering silver lateral line that catches the light
Large eyes positioned high on the head for surface feeding

When You’ll See Them

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Activity pattern diurnal

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Peak hours 7 AM - 11 AM and 4 PM - 8 PM

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Season May-September

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Diet Primarily an insectivore and planktivore; feeds on copepods, cladocerans, and small aquatic or terrestrial insects that land on the water's surface.

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Habitat Clear lakes, ponds, and slow-moving streams with plenty of aquatic vegetation and sandy or gravelly bottoms.

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Behavior

The Brook Silverside is a highly active, schooling fish that spends the majority of its life just inches below the water's surface. They are known for their peculiar swimming style and their ability to 'skip' or leap out of the water to evade predators or catch low-flying insects. Because they have a very short lifespan—rarely living past 15 to 18 months—their behavior is characterized by a high-energy, fast-paced approach to feeding and reproduction.

These fish are generally social and can be seen in large, glittering schools during the day. They are sensitive to water quality and are often considered an indicator species; they thrive in clear water and will quickly disappear from areas that become too turbid or polluted. While they are not fearful of humans, they are easily spooked by sudden shadows or vibrations on the bank, which triggers their characteristic jumping response.

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Camera Tips

Capturing the Brook Silverside requires a specialized approach because they stay so close to the water's surface. If you have a backyard pond or a dock on a lake, the best setup is an underwater action camera or an AI-powered camera housed in a waterproof casing, submerged just 2 to 4 inches below the surface. Angle the lens slightly upward to catch the reflection of their silvery scales against the sunlight, which creates a beautiful shimmering effect on film.

Because they are attracted to light and the insects that light brings, placing your camera near a low-profile dock light or a floating solar pond light can yield excellent results during the 'golden hour' at dusk. The silversides will congregate in the illuminated area to pick off gnats and midges. For the best clarity, ensure your camera is positioned in an area with submerged vegetation or lily pads, as these fish use the plants for cover and will linger longer in these 'safe' zones than in open water.

If you are using a trail camera from the shore, aim it at the 'margins' of the water where the surface is calm. Look for the tell-tale ripples of their 'skipping' behavior. Set your camera to a high frame rate (at least 60fps) if possible, as these fish move incredibly fast. To attract them into the frame, you don't need traditional bait; instead, try gently stirring the surface of the water or using a light insect attractant nearby to encourage their natural surface-feeding behavior during the early morning hours.

Similar Species

Species that look similar or are commonly confused with Brook Silverside.

Inland Silverside

The Inland Silverside has a shorter snout and is typically found in more brackish or larger open-water habitats compared to the Brook Silverside.

Common Shiner

Shiners have a much deeper, less translucent body and lack the distinct 'beak' and elongated snout of the silverside.

Frequently Asked Questions

Brook Silversides are strictly diurnal, meaning they are active during the day. You will see them most frequently during the early morning and late afternoon when insects are most active near the water's surface.

The best way to attract them is to maintain clear, well-oxygenated water in your pond and encourage natural aquatic vegetation. Avoid using pesticides nearby, as they rely on a healthy population of small insects and plankton for food.

They are surface feeders that primarily eat small crustaceans like water fleas and copepods, as well as tiny insects and larvae that float or land on the water.

Yes, they are quite common in suburban retention ponds, lakes, and slow-moving creeks, provided the water remains clear and is not overly silted by construction or runoff.

Look for the distinctive long, beak-like snout and the translucent body. Unlike many other small minnows, the Brook Silverside has two dorsal fins and a very long anal fin, and it stays much closer to the surface than most other small fish.

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