Fish Behavior

Gills in bony fish are found in a branchial chamber, which the bony operculum protects. These gills are crucial for respiration, enabling fish to take in oxygen from water. Water enters through the mouth, flows over the feathery gills, and exits through the operculum, ensuring efficient breathing in their aquatic habitats. Anatomically, gills consist of … Read more

Gills in bony fishes are not made of scales. They are feathery structures that help fish breathe by extracting oxygen from water. Bony fishes have scales on their bodies, which may be cycloid or ctenoid. The gills are covered by a bony flap called an operculum, ensuring efficient underwater breathing. Bony fishes exhibit several fascinating … Read more

Ghost knife fish, or Black Ghost Knife Fish, may nip fins at times. They are mostly shy and prefer non-aggressive tank mates. To lessen fin nipping, house them in groups of at least 10. Their delicate fins are vulnerable to species like barbs and some cichlids. Ensure their habitat meets their social needs for better … Read more

Geophagus, or “earth eaters,” are mostly not schooling fish. Juveniles may school but adults usually prefer solitude. Keeping at least four together can enhance social behavior. They thrive better with compatible tank mates and enough space in their aquarium. This helps create a more active and engaging environment. When choosing tankmates for Geophagus, select fish … Read more

Frogs are related to ray-finned fish through a common ancestor. Both belong to the larger group of vertebrates. Frogs are amphibians, while ray-finned fish are from the Actinopterygii class. They share a distant evolutionary relationship, but frogs are more closely related to tetrapods like mammals than to fish. Ray-finned fish, however, diversified extensively in aquatic … Read more

Fishing nets are not single-use plastics. They are typically made from strong, non-biodegradable materials like nylon. Though they can be reused, lost or discarded nets add to ocean pollution. They contribute to the Great Pacific Garbage Patch and harm marine life, impacting the environment and the commercial fishing industry. Research indicates that fishing nets account … Read more

Fishing nets worsen the Great Pacific Garbage Patch, comprising 46% of plastic waste. Each year, 500,000 to 1 million tons of fishing gear are lost or thrown away. These “ghost fishing gear” nets entangle marine life and disrupt marine food webs, causing significant ecological impact and increasing ocean pollution. The persistence of fishing nets is … Read more

Fishing lines are a major source of ocean plastic pollution. Abandoned and discarded fishing gear, like nets and lines, makes up about 46% of the Great Pacific Garbage Patch. This marine debris, known as ghost fishing gear, endangers marine life and harms ecosystems. Tackling this issue is vital for the health of our oceans. Additionally, … Read more

Fish stocks in the North Sea are declining, especially cod. The cod population has decreased by 12% since 2001, raising concerns about breeding risks. In the West of Scotland, the decline is more severe, with a 68% drop over the last 20 years. This situation highlights the urgent need for conservation efforts to protect marine … Read more

Fish scales have various applications. They contain bioactive peptides and can be turned into chitin and chitosan. These substances exhibit antioxidant, antimicrobial, and antiviral properties. This makes them valuable in food preservation, medicine, and cosmetics, while also supporting sustainable practices. From a health perspective, fish scales offer several benefits. They are rich in collagen, a … Read more