Fish

A:

Fish gills act as the equivalent of a mammal's lungs by taking in oxygen and releasing carbon dioxide. Oxygen and carbon dioxide travel across small, thin-walled blood vessels in both lungs and gills. In terms of evolution, gills are significantly older than lungs.

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  • Where is a dolphin situated in the food chain?

    Q: Where is a dolphin situated in the food chain?

    A: All types of dolphins are situated very high in their respective food chains, and they are generally considered apex predators. Indeed, the only regular predators dolphins and their calves have in the wild are sharks and, in some places, humans.
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  • How do I care for guppies?

    Q: How do I care for guppies?

    A: Guppies add life and color to a home aquarium, but they require special care to ensure their longevity. Caring for guppies requires a tank, a lighting unit, an air pump, a filtration unit, a siphon vacuum, water and fish food.
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  • Where do clownfish live?

    Q: Where do clownfish live?

    A: Clownfish, also called anemonefish, live in the warm waters of the Pacific and Indian Oceans, the Red Sea and the Great Barrier Reef. These fish have a symbiotic relationship with anemones, which are slow-moving invertebrate animals that look like flowering plants. Clownfish never venture far from their anemone partners.
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  • How are fish adapted to water?

    Q: How are fish adapted to water?

    A: Fish have adapted to their environment through the evolution of gills, swim bladders and fins. Gills allow fish to absorb oxygen from the water, swim bladders allow fish to maintain an appropriate level of buoyancy and fins allow the fish to move through the water. Different species exhibit specializations of these features to thrive in their own way.
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  • What do pond fish eat?

    Q: What do pond fish eat?

    A: Pond fish eat live or dried insects, worms, and grubs. Pond fish must be kept in a pond that has proper pH levels and proper air and water temperatures to ensure proper diet and eating habits.
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  • What is included in a list of fish without scales?

    Q: What is included in a list of fish without scales?

    A: Fish that do not have scales include catfish, sharks, rays, chimaeras, skates, moray eels, sturgeons, paddlefishes, salifin blennies, combtooth blennies, hagfishes and lampreys. Many of these fish have evolved scale alternatives.
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  • What is the difference between anchovies and sardines?

    Q: What is the difference between anchovies and sardines?

    A: Sardine is a generic term used to refer to small, silvery saltwater fish that are related to the herring and are found worldwide. Anchovy refers to a family of small fish found in the Mediterranean Sea, Black Sea and Atlantic and Pacific coasts.
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  • What do sea fish eat?

    Q: What do sea fish eat?

    A: Sea fish feed on small creatures, smaller fish and various dead organisms that drop down from higher water levels. It is common for sea fish to go as long as two weeks without eating, as food is often scarce in the deep sea.
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  • What was the biggest sturgeon ever recorded?

    Q: What was the biggest sturgeon ever recorded?

    A: "Field & Stream" says the 468-pound sturgeon caught by Joey Pallotta III is the biggest landed using a rod and reel. Some controversy surrounds the world record for biggest sturgeon, however, and other publications have reported larger catches.
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  • Do goldfish need an air pump?

    Q: Do goldfish need an air pump?

    A: Goldfish do not need an air pump for effective breathing. Oxygen is dissolved by disturbances at the surface of a tank, and that movement is adequately produced by the tank's filter.
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  • How do fish gills work?

    Q: How do fish gills work?

    A: Fish gills act as the equivalent of a mammal's lungs by taking in oxygen and releasing carbon dioxide. Oxygen and carbon dioxide travel across small, thin-walled blood vessels in both lungs and gills. In terms of evolution, gills are significantly older than lungs.
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  • What type of fish is Dory from Finding Nemo?

    Q: What type of fish is Dory from Finding Nemo?

    A: Dory's character in "Finding Nemo" is a blue tang fish. Blue tang fish are characterized by their bright blue coloring and yellow tail. These fish are found in the Pacific and Indian Oceans.
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  • Do all fish lay eggs?

    Q: Do all fish lay eggs?

    A: While many fish species are oviparous, not all are; some fish species are ovoviviparous, meaning that eggs are gestated and hatched inside of the female fish's body and fish fry (babies) are born live. These live-birthing fish are commonly known as livebearers.
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  • How many fish years equal one human year?

    Q: How many fish years equal one human year?

    A: One year in a goldfish's life is equal to five human years, which means one-fifth of a fish year equals one human year. The average lifespan of the common goldfish is 15 years, while exotic goldfish species may live for only eight to 10 years.
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  • What is a leopard puffer fish?

    Q: What is a leopard puffer fish?

    A: The leopard puffer is a marine reef fish that has been introduced as an aquarium fish. It is about 3 inches long and covered with black spots. It also has blue-and-yellow stripes.
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  • What is a bioluminescent fish?

    Q: What is a bioluminescent fish?

    A: Bioluminecent fish are a collection of eye-catching creatures found in the darkest zone of the ocean that create light with chemicals produced within their bodies. These glowing fish create this light to either display a threat to predators or to lure their prey in.
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  • How heavy was the largest flounder ever recorded?

    Q: How heavy was the largest flounder ever recorded?

    A: The heaviest flounder ever caught was 22 pounds, 7 ounces, landed in Montauk, N.Y., on Sept 15, 1975, by Charles Nappi. The species was a summer flounder, Platichthys flesus. This type of flounder ranges from South Carolina to Maine in the western Atlantic.
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  • What are baby fish called?

    Q: What are baby fish called?

    A: Baby fish are initially called larvae, then fry and finally fingerlings before they mature into adult fish. Larvae are totally dependent on their yolk sac, while fry are able to feed themselves. Fingerlings have functional fins and scales that are comparable to adult fish anatomy, unlike fry.
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  • What do salmon eat?

    Q: What do salmon eat?

    A: It is common for salmon to feed on other fish and zooplankton. What a salmon eats varies greatly depending on the region.
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  • What are the betta fish's hunting behaviors?

    Q: What are the betta fish's hunting behaviors?

    A: Betta fish approach their prey while swimming sideways. Betta fish are primarily carnivorous surface feeders that consume zooplankton, crustaceans, the larvae of mosquitoes and other water-bound insects.
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  • What are big-eyed goldfish?

    Q: What are big-eyed goldfish?

    A: Types of goldfish that have oversized eyes include bubble eyes, celestials, telescopes and black moors. A fifth type of large-eyed goldfish is the demekin, which is a cross between the telescope variety and the arch-bodied ryukin variety.
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