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FISH FACTS
** Body Structure ** · Bony or cartilaginous skeleton · Paired Fins: used for swimming, steering · Scales- thin bony plates · Jaws: used for crushing and gnawing food ** Body Function ** · Gills for breathing · Two-chambered heart · Ectotherms (cold-blooded) · Swim bladder- air sac used to control depth in water · Countershading- dark on dorsal side, light on ventral; used for camoflauge · Lateral line- canals on side of body; used to pick up vibrations ** Reproduction ** · EXTERNAL FERTILIZATION o Spawning: females lay many eggs · EXTERNAL DEVELOPMENT in aquatic egg ** Classification **
 * Class: Agnatha
 * Jawless fish
 * Example: lampreys
 * Suck blood from other fish
 * Skeletons made of cartilage
 * Class: Chondricthyes
 * Jaws present
 * Skeletons made of cartilage
 * Ex. Sharks, skates, and rays
 * Class: Osteicythyes
 * Bony fish
 * Ex. Perch, Musky, Tuna, Catfish, Bluegill, etc.
 * Most numerous species of all fish

[[image:barreleye1-350.jpg caption="Photo Source- http://www.mbari.org/news/news_releases/2009/barreleye/barreleye.html"]]
Barreleye The Barreleye, also known as the spook fish, is a fish named for its barrel-shaped, tubular [|eyes] which are generally directed upwards to detect the silhouettes of available prey. This fish is known to inhabit the waters at depths of 400-2,500 meters deep. The Surgeon Fish (Left), The Clown Fish (Right) The Surgeon Fish, and the Clown Fish, typically live around reefs, and feed on vegetation. These fish usually inhabit warmer waters in the Pacific and Indian Ocean.

Lion Fish

The Lion Fish is a venomous fish found in the indo-pacific waters. The shape and the coloring of the fish is great for camouflage near reefs. Fangtooth This is a African fish that is found in many rivers and lakes on the continent and are fierce predators with distinctive sharp teeth. The Fangtooth species are one of the deepest living fish, living nearly 5,000 meters deep in the ocean.

Tiger Fish This is a African fish that is found in many rivers and lakes on the continent and are fierce predators with distinctive sharp teeth.

Videos

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AQ: Why don’t you want to touch a lionfish?

A lionfish is a carnivore weighing up to 2.6 pounds. These lionfish have many other names. For example dragon fish, scorpion fish and more. The average size of these fish is 1 foot and the largest it could grow is 15 inches. These fish release venom. That venom is released from 18 needle-like dorsal fins. These dorsal fins are used for protection; however, they use their camouflage and fast speed to catch prey. The type of food that they mainly go for is fish and shrimp. The United States feels that this species presents human and environmental dangers.