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Schooling also has disadvantages, such as excretion buildup in the breathing media and oxygen and food depletion. The way the fish array in the school probably gives energy saving advantages, though this is controversial. [5] Schools of forage fish often accompany large predator fish. Here a school of jacks accompany a great barracuda.
Their hatch time is 7–9 days; young gar stay in vegetation during the first summer of life. [16] Longnose gar reach a typical length of 28–48 inches (71–122 cm), with a maximum length around 6 feet (1.8 m) and 55 lb (25 kg) in weight.
The guppy (Poecilia reticulata), also known as millionfish or the rainbow fish, [3] is one of the world's most widely distributed tropical fish and one of the most popular freshwater aquarium fish species. It is a member of the family Poeciliidae and, like almost all American members of the family, is live-bearing. [4]
A bait ball, or baitball, occurs when small fish swarm in a tightly packed spherical formation about a common centre. [1] It is a last-ditch defensive measure adopted by small schooling fish when they are threatened by predators. Small schooling fish are eaten by many types of predators, and for this reason they are called bait fish or forage fish.
The threadfin shad (Dorosoma petenense) is a small pelagic freshwater forage fish common in lakes, large streams and reservoirs of the Southeastern United States.Like the American gizzard shad, the threadfin shad has an elongated dorsal fin, but unlike the gizzard shad, its mouth is more terminal without a projecting upper jaw.
Astyanax altiparanae, sometimes called the yellow-tail tetra or yellow-tail lambari, is a species of schooling freshwater fish widely distributed across the southern half of South America. It is an ecologically flexible species, able to adapt to various resource and space conditions, and its diet follows this pattern; it is considered ...
5. Platyfish Overview. Size: 2-3 inches Average Lifespan: 2-4 years Caveats: Viviparous, needs plenty of space Platyfish, or "platies," are tiny, tropical freshwater fish that come in a variety of ...
As the orientation of the fish changes relative to another fish, the amount of light reflected to the second fish by this layer also changes. This sensitivity to orientation gives the mackerel "considerable advantages in being able to react quickly while schooling and feeding." [120] Mackerel range in size from small forage fish to larger game ...
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