Predatory fish in the context of Cretaceous–Paleogene extinction event

Recreational fishing, also called sport fishing or game fishing, is fishing for leisure, exercise or competition. It can be contrasted with commercial fishing, which is occupational fishing activities done for profit; or subsistence fishing, which is fishing for survival and livelihood.

The most common form of recreational fishing is angling, which is done with a rig of rod, reel, line, hooks and any one of a wide range of baits, as well as other complementary devices such as weights, floats, swivels and method feeders, collectively referred to as terminal tackles. Lures are frequently used instead of fresh bait when fishing for predatory fishes. Some hobbyists hand-make custom tackles themselves, including plastic lures and artificial flies.

The Amur River (Russian: река Амур) or Heilong River (simplified Chinese: 黑龙江; traditional Chinese: 黑龍江) is a perennial river in Northeast Asia, forming the natural border between the Russian Far East and Northeast China (historically the Outer and Inner Manchuria). The Amur proper is 2,824 km (1,755 mi) long, and has a drainage basin of 1,855,000 km (716,000 sq mi). If including its main stem tributary, the Argun, the Amur is 4,444 km (2,761 mi) long, making it the world's tenth longest river.

The Amur is an important river for the aquatic fauna of Northeast Asia. The river basin is home to a variety of large predatory fish such as northern snakehead, Amur pike, taimen, Amur catfish, predatory carp and yellowcheek, as well as several species of trout and anadromous salmonids. The largest fish species in the Amur is the kaluga, a sturgeon that is one of the largest freshwater fish in the world, attaining a length as great as 5.6 m (18 ft). The Amur is also home to the northernmost populations of the Amur softshell turtle and Indian lotus.

Oncorhynchus, from Ancient Greek ὄγκος (ónkos), meaning "bend", and ῥύγχος (rhúnkhos), meaning "snout", is a genus of ray-finned fish in the subfamily Salmoninae of the family Salmonidae, native to coldwater tributaries of the North Pacific basin. The genus contains sixteen extant species, namely six species of Pacific salmon and ten species of Pacific trout, all of which are migratory (either anadromous or potamodromous) mid-level predatory fish that display natal homing and semelparity.

The name of the genus is derived from Ancient Greek ὄγκος (ónkos), meaning "bend", and ῥύγχος (rhúnkhos), meaning "snout", in reference to the hooked secondary sexual characteristic — known as the kype — that the males develop on the lower jaw tip during mating season.

Salmonidae (/sælˈmɒnɪdiː/, lit. 'salmon-like') is a family of ray-finned fish, the only extant member of the suborder Salmonoidei, consisting of 11 extant genera and over 200 species collectively known as "salmonids" or "salmonoids". The family includes salmon (both Atlantic and Pacific species), trout (both ocean-going and landlocked), char, graylings, freshwater whitefishes, taimens and lenoks, all coldwater mid-level predatory fish that inhabit the subarctic and cool temperate waters of the Northern Hemisphere. The Atlantic salmon (Salmo salar), whose Latin name became that of its genus Salmo, is also the eponym of the family and order names.

Salmonids have a relatively primitive appearance among teleost fish, with the pelvic fins being placed far back, and an adipose fin towards the rear of the back. They have slender bodies with rounded scales and forked tail fins, and their mouths contain a single row of sharp teeth. Although the smallest salmonid species is just 13 cm (5.1 in) long for adults, most salmonids are much larger, with the largest reaching 2 m (6 ft 7 in).

Fishing down the food web is the process whereby fisheries in a given ecosystem, "having depleted the large predatory fish on top of the food web, turn to increasingly smaller species, finally ending up with previously spurned small fish and invertebrates".

The process was first demonstrated by the fisheries scientist Daniel Pauly and others in an article published in the journal Science in 1998. Large predator fish with higher trophic levels have been depleted in wild fisheries. As a result, the fishing industry has been systematically "fishing down the food web", targeting fish species at progressively decreasing trophic levels.

A fishing lure is any of a broad category of inedible, artificial fishing baits designed to be "fake food" that mimic the appearances of prey and thus attract the attention of predatory fish when angling. Lures come in many shapes and designs that impart different actions and vibrations, which appeal to fish's foraging/territorial instincts and provoke them into striking. Lure color, brightness or the metallic shine/flash alone may also contribute to fish striking a lure, but much of the time even clear hard or soft plastic lures will get struck as well as those made of fur, metal, wood, soft and hard plastic or skirts made of feather, rubber or silicone strands. Lures can be commercially made and purchased from tackle shops, or hand-made by anglers (as in the case of hand-tied fly lures).

Fishing lures are attached to a fishing line, and attached to at least one hook (commonly a treble hook). When lure fishing, the angler use a rod to cast or simply drop the lure to an area of water and then steadily retrieve the lure back, in the hope that lure movements and splashes against the water current will entice nearby fish into striking. Typically, the line is stored on a reel spool and cranked back in retrieval, but in handlining and ice fishing the line might be pulled by hand or tethered directly to a very short rod. Trolling or dragging a lure behind a moving boat is also an effective way to cover water and provoke fish to strike. The retrieve of a lure is as important as the lure cast and there are many types of retrieves, most are tailored to the lure, how it is used and where it is placed, i.e. what depth and/or near objects in the water such as plants or docks. Lures are search tools that find fish apt to strike something they have no clue is dangerous.

The billfish are a group (Xiphioidea) of saltwater predatory fish characterised by prominent pointed bills (rostra), and by their large size; some are longer than 4 m (13 ft). Extant billfish include sailfish and marlin, which make up the family Istiophoridae; and swordfish, sole member of the family Xiphiidae. They are often apex predators which feed on a wide variety of smaller fish, crustaceans and cephalopods.

Billfish are pelagic and highly migratory, and are found in all oceans. Although they usually inhabit tropical and subtropical waters, swordfish are also found in temperate waters. Billfish use their long spear/sword-like upper beaks to slash at and stun prey during feeding. Their bills have been known to impale prey, and have sometimes even accidentally impaled boats and people, but they are not intentionally used for this purpose. They are highly valued as game fish by sports fishermen.

A piscivore (/ˈpɪsɪvɔːr/) is a carnivorous animal that primarily eats fish. Fish were the diet of early tetrapod evolution (via water-bound amphibians during the Devonian period); insectivory came next; then in time, the more terrestrially adapted reptiles and synapsids evolved herbivory.

Almost all predatory fish (most sharks, tuna, billfishes, pikes etc.) are obligated piscivores. Some non-piscine aquatic animals, such as whales, sea lions, and crocodilians, are not completely piscivorous; often also preying on invertebrates, marine mammals, waterbirds and even wading land animals in addition to fish, while others, such as the bulldog bat and gharial, are strictly dependent on fish for food. Some creatures, including cnidarians, octopuses, squid, cetaceans, spiders, grizzly bears, jaguars, wolves, snakes, turtles and sea gulls, may have fish as significant if not dominant portions of their diets. Humans can live on fish-based diets, as can their carnivorous domesticated pets such as dogs and cats.

Brachyplatystoma filamentosum, commonly called piraíba, kumakuma, valentón or laulau, and Goliath Catfish is a species of catfish in the family Pimelodidae which is native to the Amazon and Orinoco River basins, rivers of the Guianas and North-eastern Brazil. It is an important predator in its ecosystem, and in turn is a food fish.

The swordfish (Xiphias gladius), also known as the broadbill in some countries, are large, highly migratory predatory fish characterized by a long, flat, pointed bill. They are the sole member of the family Xiphiidae. They are a popular sport fish of the billfish category. Swordfish are elongated, round-bodied, and lose all teeth and scales by adulthood. These fish are found widely in tropical and temperate parts of the Atlantic, Pacific, and Indian Oceans, and can typically be found from near the surface to a depth of 550 m (1,800 ft), and exceptionally up to depths of 2,234 m. They commonly reach 3 m (10 ft) in length, and the maximum reported is 4.55 m (14 ft 11 in) in length and 650 kg (1,430 lb) in weight.

In sport fishing, a spoon lure is a fishing lure usually made of lustrous metal and with an oblong, usually concave shape like the bowl of a spoon. The spoon lure is mainly used to attract predatory fish by specular reflection of light, as well as the turbulences it creates when moving in water.

The design of the spoon lure is simple: the oblong, concave blade shape of the spoon will cause it to wabble randomly when towed or sinking through water, creating sparkles of light reflection that resemble those of a swimming bait fish's scales when looking from afar. The spoon wabbling also stirs up turbulences that can entice the fish to stalk and strike it. Fish normally use their lateral line system to follow the vortices produced by fleeing prey, and the oscillating movements of the spoon lure can imitate these. Different color variations and materials can be added to the classic spoon lure may also help catch fish. Silver- or gold-plated or dyed finishes can give the lure a more vibrant or brilliant appearance. Most spoon lures have at least one hook at the end, which tethers the fish's mouth when the fish swallows the spoon.

A spinnerbait or spinner is any one of a family of hybrid fishing lures that combines the designs of a swimbait with one or more spoon lure blades. Spinnerbaits get the name from the action of the metallic blades, which passively revolve around the attachment point like a spinning propeller when the lure is in motion, creating varying degrees of vibration and flashing that mimic small fish or other preys of interest to large predatory fishes. The two most popular types of spinnerbaits are the in-line spinner and safety pin spinnerbait, though others such as the tail spinner also exist. Spinnerbaits are used principally for catching freshwater fishes such as perch, pike and bass.

Fly fishing is an angling technique that uses an ultra-lightweight lure called an artificial fly, which typically mimics small invertebrates such as flying and aquatic insects to attract and catch fish. Because the mass of the fly lure is insufficient to overcome air resistance, it cannot be launched far using conventional gears and techniques, so specialized tackles are used instead and the casting techniques are significantly different from other forms of angling. It is also very common for the angler to wear waders, carry a hand net, and stand in the water when fishing.

Fly fishing primarily targets predatory fish that have a significant amount of very small-sized prey in their diet, and can be done in fresh or saltwater. North Americans usually distinguish freshwater fishing between cold-water species (trout, salmon) and warm-water species (notably black bass). In Britain, where natural water temperatures vary less, the distinction is between game fishing for trout and salmon versus coarse fishing for other species. Techniques for fly fishing differ with habitat (lakes and ponds, small streams, large rivers, bays and estuaries, and open ocean.)

Bait fish (or baitfish) are small-sized fish caught and used by anglers as bait to attract larger predatory fish, particularly game fish. Baitfish species are typically those that are common and breed rapidly, making them easy to catch and in abundant supply.