BC: © JEC Inc.
FC: All About Fish | By: Cassie Govea, Emily Sieber, and Jalen Springfield
1: Classification | Kingdom Animalia | Phylum Chordata | Subphylum Verbrata | Class Fish | Order Jawless Cartilaginous Bony
2: Fish live in marine and freshwater biomes. The Earth we live on is 75% covered in water. With this much water, many water animals are found, including fish. | Biomes By Class
3: Best Catch of the Day! | Reproduction method | Most fish have external reproduction. External reproduction is when eggs are outside of the female's body. Although some fish do not have external reproduction, such as , sharks and guppies have internal reproduction where the egg is developed inside the female's body.
4: Predator/ Prey Feeding Habits | Fish are equipped with different styled teeth, or in some cases no teeth, to feed. Barracuda have very sharp and needle-like teeth so they can stab into their prey. Trout, which feed on insects, have blunt teeth so they can crush on them. Still others, like the basking sharks filter their food from their gills with comblike structures.
5: Type of Symmetry | All fish have bilateral symmetry. Bilateral symmetry is when you can "split" it in half and the two halves will be mirror images of each other.
6: Era/Period | The earliest fish were in the Paleozoic Era in the Ordovician Period. These ancient ancestors were over 500 million years old and were jawless fishes.
7: “Life is either a great adventure or nothing.” ~Helen Keller | Biologists classify fishes into three major groups: Jawless fishes cartilaginous fishes, and bony fishes. They are distinguished from one another by the structure of their mouths and the types of skeletons they have. | Characteristics by Order | Jawless fishes are the earliest vertebrates. Modern jawless fish don't have scales. Their skeletons are made out of cartilage, but they don't have pairs of fins, and they don't bite. Although their mouths have structures for scrapping, stabbing and sucking. There is two kinds jawless fishes and they are hagfishes and lampreys. Hagfishes simply look like large, slimy worms. Many lampreys are parasites of other fishes and have ell-shaped bodies.
8: est Catch of the Day! | Most fish that we know are bony fish, like trout, tune and goldfish. their skeletons are made out of hard bones.. Their bodies are also covered with scales, and a pocket on each side that holds the fish's gills. Their gills remove oxygen from the water for use by the fish's cells, They also have a swim badder that helps the fish stabilize at different levels in the water. | Sharks, rays, and skates are known as cartilaginous fishes. As you can tell in its name its skeleton is made out of cartilage. Unlike the jawless fishes these kinds of fish do have jaws and pairs of fins. They have pointed, toothlike scales that feels like sandpaper They are also carnivores.
9: Food Web
10: Lionfish (Pterois volitans) | The lionfish can be found in between Japan and Australia. This fish has poisonous spines and red and white stripes. The lionfish can live up to 15 years. They also weigh up to 2.5 pounds. The average size of a lionfish is about 12 to 15 inches. In the United States lionfish are mainly used in aquariums for their beauty, but in other countries they use the lionfish for food.
12: How Fish Obtain Oxygen | Since they live in the water they get their oxygen from the water. how it does this is it opens up his mouth while it's swimming and takes some water. The water that the fish take in goes through its throat and goes to the gills by going through holes in the throat. A fish has only one-loop closed circulatory system where when the oxygen removes itself from the water into the fishes blood and carbon dioxide moves out of the blood and into the water. After the fish has gotten its oxygen the oxygen is released back into the water through the fishes' gill slits. Although the fishes blood does goes through the fish giving its cells oxygen. The heart of the fish moves the blood all around the fishes body. It then goes from the heart to the gills and from the gills its sent to the rest of the body, then from there its sent back to the heart.
13: How Fish Move and Feed | The most important thing that fishes do is they swim and they use their fins to help them do that. Most fish have a thin fin that stretches out. A fin has to be very hard so it can push away the water. Most of the fishes movement is related to eating because they spend most of their time finding or eating food. Most bodies of fish are fit to efficient feeding. The type of fish that eat smaller fish are carnivores and insect eating fish use their short, curved teeth to eat their food. Although filter feeders suck on their food with the structures that they have. Fish find food and avoid predators by using their nervous systems and sense organs that are highly developed to do those actions. Since we're not adapted to see underwater and fish are they can see better than us in the water. Fish use three of the five senses to get food: touch, smell, and taste. As you probably know a shark can smell even the smallest drop of blood in 115 liters of water. In addition, some fish have taste organs in the most oddest places.
14: How Fish Reproduce | Most female fish have their eggs produced outside of their body which is known as external fertilization. When a female fish does this the male goes over to her and lets out a cloud of his sperm onto the eggs while the female fish is producing them. Although sharks and little guppies fertilize their eggs inside their bodies which is internal fertilization. the fish develop in her body then when they are old enough she finally gives birth.
15: Food for People | Many fish such as the Pacific salmon and the Atlantic codfish have had there populations reduce because of overfishing. Some countries like the United States and Canada have tried to stop overfishing by setting limits on certain fish you can catch. Overfishing is a big problem because with this, fish are dying from humans wanting to eat them.