Waterdog fish are commonly referred to as mudpuppies; these organisms spend most of their lives underwater and are actually salamanders. Mudpuppies live in waterways around the United States; they occur primarily east of the Mississippi and prefer habitats of streams, rivers and swamplands.Know More
Mudpuppies are one of only several species of salamanders that communicate using vocalization. These species are relatively unattractive in appearance; they have thick brown mottled coats that do not hold great visual appeal but help mudpuppies stay camouflaged when swimming through the water. When provoked or frightened, mudpuppies emit squeaks that resemble the barking of dogs. They are among the largest species of salamander and may reach full-grown heights exceeding 15 inches; there is little variation in size between adult males and females.
These creatures breed in the spring to produce eggs, which hatch into live young mudpuppies. Female mudpuppies lay relatively large clutches or broods of eggs, which they guard until the young hatch. Mudpuppies have bushy red gills on the outsides of their bodies, which develop in the larva stage. These creatures seldom leave water and emerge at night to feed on their prey, which includes crayfish, worms, crustaceans and snails. These creatures have flat heads, stubby legs and wide tails.Learn more about Amphibians
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.Full Answer >
Both species commonly referred to as pollock, the Alaskan pollock and Atlantic pollock, have scales. The presence of scales is especially important for members of the Jewish faith who are only permitted to eat kosher fish, which must have both fins and scales.Full Answer >
A wild salamander eats slugs, worms and small arachnids such as spiders and millipedes. One example of a wild salamander is the spotted salamander, which leaves its burrow at night to hunt these creatures. The giant Japanese salamander, which lives in water and can grow to be nearly 5 feet long and 50 years old, eats fish, insects, crustaceans and worms; it has also been known to take small mammals.Full Answer >
Amphibians are cold-blooded. Cold-blooded animals, including amphibians, are also called "ectotherms." Their body temperatures are affected by outside sources, such as heat from the sun and local environmental conditions.Full Answer >