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Video information helps biologists understand and the responses of fish assemblages to oceanographic changes and increasing harvest. This understanding may help society restrict fish harvests to maximize benefits to both the fish resource and human consumers. Man is only one of many predators that cruises the oceans. There are many fish and invertebrate species that keep the numbers of forage species and juvenile fishes in check each year by preying on them. Several examples of both predator and prey species are give in the associated video files.
Fish Watch Videos Shark Nov 11 2002
Watch closely and you can see the shark in the lower right-hand corner. We don't get a lot of sharks in this area, but maybe this guy was hungry...
Fish Watch Videos Ocean sunfish and shark suckers
Ocean sunfish are rarely observed, especially, when accompanied by a number of shark suckers. file #C5200011161230
Fish Watch Videos Tuna and other predators feeding
Information on feeding events assists in understanding energy flow among members of the reef fish assemblage and members of the, often transient, pelagic predators. (C1200411131900)
Fish Watch Videos Pelagic forage species and tuna
Rapid swiming pelagic predators, such as tuna, often hunt schools of small pelagic scads near the bottom. (C4200412191901)
Fish Watch Videos Male Black Sea Bass in "Gray Head" color phase
Information on the spawning times of reef fish in important to relate to environmental conditioins and times of the year. The "Gray Head" phase of male Black Sea Bass is rarely seen and believed to signal that species spawning potential in the near future. (C4200404041800)
Fish Watch Videos Black Sea Bass, which are not males in spawning condition
The most common black sea bass are the small female fish that do not display "Gray Head" color patterns, as the breeding males do. (C6200212141602)
Fish Watch Videos Swarms of juvenile fish associate with structures near the bottom
Juvenile reef fish are an important of the forage base of the assemblage. If they surive, they will represent recruitment to the adult populations.
Fish Watch Videos Juvenile grunts close to the camera.
Identification of juveniles is difficult when the schools remain at a distance from the camera. Occasionally, when several get close, as these juvenile grunt did, they can be identified.
Fish Watch Videos Barracudas are considered "ambush" predators.
Predators often show up at the same time as swarms of juveniles are available. Ambush predators wait quietly for prey to get a little to close. (C5200009171230)
Fish Watch Videos stingray video