A:According to North Carolina Aquariums, fish swim in schools because schooling protects them from predators, encourages reproduction and makes it easier to find food. Schooling also conserves energy, as each fish drafts in the wake of the fish ahead of him. This makes it easier for fish to swim long distances without exhaustion.
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.
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.
A:Baby catfish in the fry stage eat the same foods that any other egglayer fry would eat. Egglayer fry eat the smallest foods that can be given, including infusoria, which is a culture of swimming protozoa. After a week, catfish fry can also eat nutritious brine shrimp and nematodes.
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.
A:Manta rays and stingrays differ in size, diet and appearance. Manta rays are significantly larger than the stingrays, with oceanic mantas reaching a size of 23 feet from wing tip to wing tip, and reef mantas, a smaller species, reaching a wing span of 9 to 15 feet. Larger stingrays grow to 6.5 feet in length. The manta ray also lacks the characteristic venomous stinger found on the stingray's tail.
A:The green spotted puffer, Tetraodon nigroviridis, is a colorful species of the Tetraodontidae family native to South and southeast Asia. The fish is named for its rich green coloration at the top with dark spots and white underbelly.
A:Reef stonefish are the most poisonous fish in the world. Stonefish live in warm, tropical waters, primarily in the Oceanic region of Australia and New Zealand. They have 13 long spines in their dorsal fins that are filled with highly toxic venom, which the stonefish use to kill prey.
A:The smallest fish in the world is the Paedocypris progenetica, a tiny fish that lives in the forest swamps in Sumatra and measures a mere 0.31 inches in length. According to the National History Museum, its existence was unknown until 2006, when it was first discovered.
A:Goliath grouper are the largest members of the sea bass family in the Atlantic ocean. They weigh up to 800 pounds and are up to 8.2 feet in length. They are also heavily built, and their bodies are half as wide as they are long at their widest point.
A:The firefish goby is a 3-inch-long, yellow-headed aquarium fish with a white body and an orange-red tail. Firefish, fire dartfish and magnificent dartfish are other common names for the firefish goby.
A:Koi carp grow to an average size of 24 to 36 inches long. It is possible for some to reach lengths greater than 4 feet but only when pond conditions replicate their natural environment and they have plenty of space.
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.
A:According to National Geographic, puffer fish live in sub-tropical and tropical waters. In Asia, they are commonly found around Japan, China, Taiwan and the Philippines, while in the Caribbean, they are found in the West Indies and Mexico.
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.