Question

Angler fish, frog fish, monk-fish and sea devil are commonly known as
A. Echeneis
B. Lophius
C. Chimaera
D. Labeo

Answer 1

Hint: The Angler fish is a predator fish. It belongs to the class Actinopterygii and order Lophiiformes. Angler fish is a bony fish which possesses bone tissues in their structure. Modified fin ray is found in the angler fish. Both sexual dimorphism and sexual symbiosis are found in the angler fish.

Complete answer: The genus Echeneis belongs to the family Echeneidae, order Carangiformes. Echeneis is mainly found in the Indian oceans and the Atlantic Ocean.
Lophius sp belongs to the class Actinopterygii, order Lophiiformes and family Lophiidae. The fishes which belong to the Lophius are also known as monkfish, frogfish, sea devil etc. These fishes are bony fishes. In some Angler fish, both the sexual dimorphism and the sexual symbiosis are noticed.
Chimaera sp belongs to the class Chondrichthyes, subclass Holicephali and order Chimaeriformes. Chimaera sp is mainly found in the temperate ocean. It is a cartilaginous fish. Common names of Chimaera are ratfish, rabbit fish, stockfish etc.
The genus Labeo belongs to the class Actinopterygii, order Cypriniformes, family Cyprinidae. Labeo possesses a rostrum with two barbels. It comprises a spindle-shaped body. These are freshwater fishes. Example: Labeo rohita.
So, the correct answer is “Option B”.

Note: Lophius sp comprises a head that is large, depressed and flat in shape. The head comprises a large mouth which is extended throughout the anterior surface of the head. The articulated pectoral and ventral fin is present which acts as the feet. These fishes are capable of walking on the bottom surface area of the sea by using the foot.