Fish Behavior

Fish breathe with gills. Gills are specialized organs that extract oxygen from water. They are located on both sides of the pharynx. Fish pull water in through their mouths and push it over the gills. Dissolved oxygen then enters the blood, helping fish efficiently breathe underwater while removing carbon dioxide. Fish possess different gill structures … Read more

Fish often bite before a storm due to falling air pressure, which triggers their feeding behavior. Storms reduce visibility and can slow fishing. After a storm, fish may bite again, but they might be sluggish while conditions stabilize. The best fishing times are before storms when fish respond to pressure changes. However, storms can create … Read more

Fish often bite during a storm. The drop in barometric pressure boosts their activity and feeding behavior. Before storms, fish feed more and are easier to catch. After heavy rain, fishing slows due to low visibility and changing currents. The best time to fish is just before and during the pressure drop. Anglers often report … Read more

Fish bioaccumulate microplastics and their chemicals in their gastrointestinal tracts and tissues. Factors such as species variations and duration of exposure play a role in this process. Microplastics can carry toxins through the food chain, creating health hazards for fish and humans. These toxins can disrupt cell functions and cause physical damage. Risks to marine … Read more

Fish have scales, which are small plates on their skin. Most jawed fishes possess these protective scales for safety, camouflage, and improved movement. The main types of scales include placoid, cosmoid, ganoid, and cycloid. However, some fish, like catfish and eels, either lack scales or have fewer scales. The function of scales extends beyond mere … Read more

Fish and reptiles both have scales, but their structures are different. Fish scales come from skin tissue and can be bony and flake off. Reptile scales grow from the outer skin layer and are made of keratin. These scales protect the animals and serve different functions. Despite similarities, scales evolved independently in fish and reptiles. … Read more

Fish adapt to overfishing by growing slower and changing their feeding behavior. Species that are large and have slow reproductive traits face challenges in recovery. Overfishing endangers entire ecosystems. However, fish populations can recover if fishing practices become sustainable and environmental conditions improve. Overfishing leads to significant declines in fish populations. This decline disrupts the … Read more

Freshwater fish absorb water through their gills and skin. Saltwater fish drink water to replace lost fluids. Gills enable fish to extract oxygen using a countercurrent exchange system. When fish open their mouths, water flows over their gills, allowing them to absorb oxygen and necessary moisture for their body fluids. Fish do experience a form … Read more

Fin whales are filter-feeding baleen whales. They primarily eat small schooling fish like herring and capelin, as well as krill and squid. They lunge feed to capture large amounts of prey. These whales can consume up to two tons of food each day, showcasing their efficient feeding behavior. Fin whale feeding habits vary by season … Read more

Human embryos do not develop real gills. They have structures called pharyngeal arches, which look like gills but have different functions. These arches are important in embryonic development and later become parts of the jaw and inner ear. While embryos show fish-like traits, they never breathe through gills. During early development, a human embryo goes … Read more