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A school of fish has many eyes that can scan for food or threats Pacific sardine school reacting to attention from yellowfin tuna These sometimes immense gatherings fuel the ocean food web . Most forage fish are pelagic fish , which means they form their schools in open water, and not on or near the bottom ( demersal fish ).
School of Fish was an alternative rock band which formed in 1989 and disbanded in 1994. The core members were Josh Clayton-Felt (lead vocals and guitar) and Michael Ward (guitar). School of Fish released two albums and are remembered for the hit single "3 Strange Days" (1991).
A school of bluefin trevally working a school of anchovies which may compact into a spherical bait ball if they are sufficiently threatened. A bait ball, or baitball, occurs when small fish swarm in a tightly packed spherical formation about a common centre. [1]
Anadromous – fish that live their adult lives in the ocean but migrate up fresh water rivers to spawn. Examples are Pacific salmon. Fish that migrate in the opposite direction are called catadromous. Anoxic sea water – sea water depleted of oxygen. See hypoxia. Anoxic sediments – sediments depleted of oxygen.
However, fish have an optokinetic reflex in their visual systems that can be sensitive to moving stripes. [118] For fish to school efficiently, they need feedback mechanisms that help them align themselves with adjacent fish, and match their speed. The stripes on neighbouring fish provide "schooling marks", which signal changes in relative ...
Reef fish have also evolved complex adaptive behaviours. Small reef fish get protection from predators by hiding in reef crevices or by shoaling and schooling. Many reef fish confine themselves to one small neighbourhood where every hiding place is known and can be immediately accessed.
The giant trevally is a solitary fish once it reaches sexual maturity, [19] only schooling for the purposes of reproduction and more rarely for feeding. [21] Juveniles and subadults commonly school, both in marine and estuarine environments.
The splitfin flashlightfish or two-fin flashlightfish (Anomalops katoptron) is a species of schooling reef fish in the family Anomalopidae.It is found in warm waters in the central and western Pacific Ocean near reefs 200–400 m (660–1,300 ft) in depth. [1]