Q.1.
A popular fish character on the big screen is Dory from Finding Nemo. What kind of fish is Dory?

Based on the name, some believe Dory is a John Dory (also known as the St. Peter's fish). However, that is incorrect. Dory is a blue tang.

Q.2.
Just like other fish, most sharks are cold-blooded, except for a few. Which among the following sharks has warm-blooded capabilities?

Aside from the great white shark, the four other warm-blooded sharks include the salmon shark, longfin mako, porbeagle, and shortfin mako. These sharks can raise their body heat, allowing them to hunt better in cold waters.

Q.3.
After the whale shark, what is the next biggest fish?

Nearly 8 meters in length, the basking shark is the second biggest fish. Despite its intimidating features, such as a huge open mouth when feeding, it is quite harmless to people since plankton is its food.

Q.4.
Aside from counting growth ring marks on its scales, how else do scientists determine a fish's age?

Similar to a tree trunk's rings, ring marks on scales and ear bones give scientists ideas on how old a fish is. One year is equivalent to each pair of rings.

Q.5.
Which sea fish is considered the most important in America because of how it impacts the agricultural industry?

Native Americans introduced the use of menhaden as fertilizer to early settlers. Centuries later, the menhaden is not only important for agriculture, but it is also a key ingredient in other industries.

Q.6.
Worldwide, the goldfish is one of the most popular pets. What is a group of goldfish called?

Though school is the general term for groups of fish, some species have more interesting names. For goldfish, a group of them is called a troubling.

Q.7.
Which of the following fish can look above water and below the water at the same time?

Anableps actually only have two eyes that are each separated horizontally by a tissue into two lobes. When they go near the water surface, the upper half of its eyes are exposed, allowing it to see above the water. The lobes underneath, however, have their own pupils, allowing them to see below at the same time.

Q.8.
What fish has a name that literally means "holy flatfish" because people like eating them during Catholic holidays?

The female can grow up to 600 pounds, making the halibut the biggest flatfish of the flounder family. Being flatfish, they swim with their lateral side parallel to the ocean floor, where they stay camouflaged as they wait for prey.

Q.9.
What specialized body part helps fish to orient themselves and navigate in the water?

The lateral line consists of several sense organs that help fish detect changes in their surroundings (pressure changes, movement). This system helps fish with spatial orientation and allows them to stay in their school formation.

Q.10.
Fish communicate by different means, but rarely by sound. What kind of fish uses a humming sound to attract its mate?

Both the male and female plainfin midshipman produce vocalization that creates grunting and growling noises but the male makes a humming sound that can last for hours to attract a female. As fish have no vocal cords, these sounds are produced by its swim bladder's muscles.