Question

The largest fish is
A. Cetorhinus
B. Carcharhinus
C. Carcharodon
D. Rhincodon

Answer 1

Fish are a paraphyletic bunch that depicts sea-going vertebrates while barring tetrapods, and the hard fish that frequently speak to the gathering is all the more firmly identified with cetaceans, for example, whales, than to the cartilaginous fish, for example, sharks and beams.

Complete answer:
Fish change extraordinarily in size. The whale shark and lounging shark surpass all other fish by an extensive edge in weight and length. The whale shark (Rhincodon typus) is a sluggish, channel taking care of floor covering sharks and the biggest known surviving fish species. The biggest affirmed individual had a length of $18.8{\rm{ }}m{\rm{ }}\left( {62{\rm{ }}ft} \right)$. It is the sole individual from the sort Rhincodon and the main surviving individual from the family Rhincodontidae, which has a place with the subclass Elasmobranchii in the class Chondrichthyes. Before 1984 it was named Rhineodon into Rhincodontidae. The whale shark is found in vast waters of the tropical seas and is infrequently found in water under $21{\rm{ }}^\circ C{\rm{ }}\left( {70{\rm{ }}^\circ F} \right)$. Studies taking a gander at vertebral development groups and the development paces of free-swimming sharks have assessed whale shark life expectancies at $80-130$ years. Whale sharks have enormous mouths and are channel feeders, which is taking care of mode that happens in just two different sharks, the megamouth shark, and the luxuriating shark. They feed solely on microscopic fish and little fishes and represent no danger to people.

So, the correct answer is option D.

Note: Whale sharks are otherwise called jinbei-zame in Japan (because the markings look like jinbei); gurano bintang in Indonesia; and ca ong (in a real sense "sir fish") in Vietnam. The whale shark is likewise highlighted on the most recent $2015-2017$ release of the Maldivian 1000 rufiyaa banknote, alongside the green turtle.