The silver pencil fish, or Labidesthes sicculus, is a small freshwater fish that is not well-known among sport anglers in Quebec. This fish is not particularly sought after for its fighting ability, but it plays an important ecological role as prey for many aquatic predators. It is mainly found in clear, calm waters, often in large schools. Although it is not a prized target for sport fishing, it can be interesting to observe for aquatic biodiversity enthusiasts and anglers looking for live bait.

The silver pencil fish is a slender, thin fish that rarely exceeds 15 cm in length. Its body is silver with a slight greenish tint on the back, making it difficult to spot in clear waters. The fins are generally translucent, and its mouth is small and slightly turned upward, adapted for capturing small surface invertebrates. The scales are small and not very noticeable. Males and females are similar, although males may have slightly brighter colors during the spawning period. Young fish resemble adults but are even more translucent, helping them camouflage from predators.

In Quebec, the silver pencil fish is primarily found in the south, including the watersheds of the Saint Lawrence River and Lakes Ontario and Erie. It is mostly found in the calm, clear waters of rivers and ponds. It is less abundant in murky or deep waters. Its distribution is limited by its preference for warmer temperatures and low-turbidity waters.

The silver pencil fish prefers calm, clear waters, often near shores where aquatic vegetation is dense. It is typically found in ponds, slow-moving rivers, and shallow bays. It generally stays near the surface or at mid-depth, taking advantage of the light to hunt for small insects and other invertebrates. Slightly alkaline and well-oxygenated waters constitute its ideal habitat.

The spawning of the silver pencil fish occurs in spring when water temperatures reach around 15 °C. Females lay adhesive eggs that attach to aquatic vegetation. The eggs hatch after a few days, giving rise to translucent fry. These young fish grow rapidly and reach sexual maturity in one year. Their lifespan is relatively short, ranging from 1 to 3 years. Life cycle timeline: Spring (spawning) → Summer (growth) → Fall (maturity) → Winter (survival in calm water).

The silver pencil fish is a social fish, forming large schools to protect itself from predators. It is not territorial and moves freely within its habitat. This fish is sensitive to changes in light and shade, often moving to brighter areas to feed. Disturbances such as wind or noise can cause it to temporarily scatter, but it quickly returns to its schooling behavior once calm returns.

The diet of the silver pencil fish mainly consists of small aquatic invertebrates, such as mosquito larvae and other aquatic insects. Fry feed on zooplankton and microorganisms. As they grow, they begin to consume larger prey but remain focused on the surface and upper layers of the water. In winter, their feeding activity decreases, but they continue to feed when the temperature allows.

The best time to observe or catch silver pencil fish is during spring and summer when the water is warmer and insects are abundant. They are more active at dawn and dusk when the light is soft. Ideal weather conditions include stable pressure and a slightly overcast sky, which stimulates their surface activity. In autumn, their activity decreases, and they become harder to spot. In winter, they seek refuge in deeper, calm waters, reducing their activity.

In clear waters, opt for silver or translucent lures that mimic their natural appearance. When it's sunny, a lure with metallic reflections can increase the fish's interest. In overcast skies, more neutral or slightly bluish colors may work better. If the water is murky, prefer brighter colors for better visibility.

To fish for the silver pencil fish, a light rod between 1.8 to 2.1 meters with a fast action is ideal. Use a light reel and a 2 to 4 lb line for better sensitivity. Hooks should be small and fine, size 12 to 16, to fit their small mouth. A fluorocarbon leader can be used for its discretion in the water.

Handle the silver pencil fish with care, as its small size makes it fragile. Use a wet hand to avoid damaging its mucous coating. If you release it back into the water, ensure it is well-revitalized before letting it go. For photos, avoid keeping it out of the water for too long.

The main aquatic predators of the silver pencil fish include perch, bass, and pike. Aquatic birds, such as herons and kingfishers, are also frequent predators. Their schooling behavior helps reduce the risk of predation.

The silver pencil fish is not considered an endangered species in Quebec. However, water quality and the conservation of aquatic habitats are essential for its survival. There are no specific regulations for this species, but catch-and-release is encouraged to maintain local populations.