Question

Which among the following are the examples of Pisces?
A) Rohu
B) Mandarian fish
C) Dog fish
D) All of the above

Answer 1

Hint: Fish are normally ectothermic, and are not able to thermoregulate at the same temperature as the environment. Also at water temperatures down to 6 degree Celsius, tuna can sustain a temperature of 24-25 degree Celsius in their swimming muscles.

Complete Answer:
Pisces is a category of the Phylum Chordata Subphylum Vertebrata. Generally, the body of the fish is streamlined. Some likewise have a spindle-formed or elongated body. They separated their bodies into a head, a trunk, and a tail. With the aid of their tails, they dive. The appendages depict paired and unpaired fins. When swimming, these allow the fish to balance. To sense the changes in the nearby environment, the lateral line system acts as a sensory organ. Thick-seated scales cover the body, which helps to protect the inner organel by preventing damage. Those are real, jawed vertebrates with breathing, excretion and blood flow organs unique to them.

Now, let us find the solution from the options-
- Rohu is a bony fish whose endoskeleton is bony. It has four pairs of operculum-covered gills on each side. It's a big omnivorous water fish in the river.
- In the Mandarian fish, unlike the four-chambered mammalian heart, the heart is two-chambered. Eggs are laid.
- Dog fish relate to the shark family, which falls under the Pisces class.
- Rohu, dog fish, Mandarin fish, all such marine species are dogfish. They are cold-blooded creatures with a body that is streamlined. They refer to the Chordata phylum and the Pisces class.

Thus, the correct answer is option (D) All of the above.

Note: Poikilotherms are the organisms belonging to this grouping, indicating that their own body temperature could not be controlled. The eggs are fertilized externally and sometimes left to float in the water, especially at sea, although they can cling to rocks where in some cases the parents.