Fish Behavior

Most fish breathe using gills, which are specialized organs that extract oxygen from water. They take in water through their mouths. As the water moves over the gills, oxygen diffuses into the fish’s bloodstream. Fish do not have lungs; they depend on gills for their respiratory process in water. Unlike mammals, fish do not have … Read more

Yes, breastfeeding mothers can safely eat fish. Choose low-mercury options like salmon and shrimp. Limit high-mercury fish, such as swordfish and shark. Aim for 2-3 servings weekly from the “Best Choices.” Always select sushi from reputable sources. The health benefits of fish usually outweigh the risks with careful choices. Maternal diet varies among fish. Some … Read more

After a rainstorm, fish usually become more active. The rain adds oxygen to the water and changes barometric pressure. This encourages fish to leave their hiding spots and hunt for food. However, your fishing success can depend on the storm’s severity and water clarity. Use bright lures near structure for a better catch. Post-storm fishing … Read more

Feeder fish need a filter to keep water quality high and promote their health. A filter removes waste and adds oxygen to the water. Look for a small, effective, and affordable option. Good filtration supports a stable habitat and is vital for the survival of your feeder fish. Feeder fish, such as guppies or goldfish, … Read more

Coral reefs are vital food sources for fish. They support a rich marine life and provide shelter and breeding areas. About 25% of ocean fish species depend on healthy reefs for survival. The intricate structures of corals create habitats that help fish find food and reproduce effectively. Additionally, coral reefs play a vital role in … Read more

Coral reefs need fish to survive. Fish clean algae from corals, supply essential nutrients, and control pests. This interaction supports a balanced ecosystem, which is vital for coral health. Without fish, coral reefs cannot maintain their vitality and resilience, showing the interdependence of these marine species. Fish also facilitate reproduction among corals. Many species of … Read more

Catfish do not have scales; they often have naked bodies. Their skin is mucous-covered, which helps in cutaneous respiration, allowing breathing through the skin. Some catfish species have bony plates known as scutes for protection. These features are unique adaptations in the catfish order. Most catfish species possess a tough skin that allows them to … Read more

Bony fish typically have scales. These are protective plates on their bodies. The scales can be classified into four main types: cosmoid, ganoid, cycloid, and ctenoid. These scales help reduce water resistance and offer protection from predators and environmental factors. Knowing about these scales is important in fish biology. Bony fish exhibit a range of … Read more

Most bony fish have two sets of paired fins. Some, like certain eels, have one set or no paired fins at all. Bony fish are known for their bony skeletons and unique characteristics, including their fin structure. This fin configuration helps them move effectively in their environments. Bony fish belong to the class Actinopterygii, which … Read more

Betta fish fins can grow bigger with proper care and nutrition. Young bettas often see significant fin growth. Healthy bettas in clean water are less likely to develop fin rot, allowing fins to regrow. Factors like age, environment, and diet, including live food, also help support fin development. Health conditions significantly impact fin growth. A … Read more