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In saltwater estuaries and along beaches, Coastal cutthroat trout feed on small fish such as sculpins, sand lance, salmon fry and herring. [20] They also consume shrimp, small squid and krill. In fresh water, they consume the same diet as stream resident trout—aquatic insects and crustaceans, amphibians, earthworms, small fish and fish eggs. [78]
Adult fish also prey on fish eggs and larvae. For example, haddock were observed satiating themselves with herring eggs back in 1922. [14] Another study found cod in a herring spawning area with 20,000 herring eggs in their stomachs, and concluded that they could prey on half of the total egg production. [17] Fish also cannibalise their own eggs.
Matriphagy is the consumption of the mother by her offspring. [1][2] The behavior generally takes place within the first few weeks of life and has been documented in some species of insects, nematode worms, pseudoscorpions, and other arachnids as well as in caecilian amphibians. [3][4][5] The specifics of how matriphagy occurs varies among ...
Durophagy is the eating behavior of animals that consume hard-shelled or exoskeleton-bearing organisms, such as corals, shelled mollusks, or crabs. [1] It is mostly used to describe fish , but is also used when describing reptiles , [ 2 ] including fossil turtles, [ 3 ] placodonts and invertebrates, as well as "bone-crushing" mammalian ...
Fish locomotion. Fish locomotion is the various types of animal locomotion used by fish, principally by swimming. This is achieved in different groups of fish by a variety of mechanisms of propulsion, most often by wave-like lateral flexions of the fish's body and tail in the water, and in various specialised fish by motions of the fins.
The hunter cuts a square hole in the ice on the lake and fishes using a fish lure and spear. Instead of using a hook on a line, Inuit use a fake fish attached to the line. They lower it into the water and move it around as if it is real. When the live fish approach it, they spear the fish before it has a chance to eat the fake fish. [9]
Star fish that exhibit unidirectional regeneration, or regeneration that is restricted to a single direction, [ 8 ] are capable of regenerating multiple lost limbs from a disk containing half or more of the original starfish. Unidirectional regeneration is the simplest form of regeneration as the majority of the disk is intact, allowing the ...
The American paddlefish (Polyodon spathula), also known as a Mississippi paddlefish, spoon-billed cat, or spoonbill, is a species of ray-finned fish. It is the last living species of paddlefish (Polyodontidae). This family is most closely related to the sturgeons; together they make up the order Acipenseriformes, which are one of the most ...