Question

Which of the following fish is surface feeder?
a. Eels
b. Bass
c. Haddock
d. Catla

Answer 1

Hint: Surface feeder fishes are a kind of fishes that are found to have a straight back and an upturned mouth. This kind of body structure allows them to grab the food from the water surface without being spotted by the hunter.

Complete answer:
Let's study about each of the options mentioned above in detail to answer this question.
Catla fish has a typical fish structure. A snout, dorsal, ventral, pelvic and anal fins and hard scaly skin is common to this organism. It is commonly found in freshwater bodies of asian region. their length can range up to 180 cms. They are a surface feeder that grabs food from the surface of water. therefore, we can say that option d) is the correct option.
Eels are the inhabitants of marine water. Therefore, they are found in shallow water if oceans. It has ray shaped fins that allows it to swim. It has an elongated body that can range upto 5cms in length. Eels have a unique swimming technique in which their body generates waves that propels its body in forward or backward direction. They are a bottom feeder organism, so cannot be an example of surface feeder. therefore, option a) is an incorrect option.
Bass is another kind of fish that is whitish in colour and is commonly found near the water bodies of North America. They are found in both fresh and salty water depending upon the need of the environment. Their body is carved with fine scaly lines having dorsal, pelvic and anal pair of fins. These are also a bottom feeder. therefore, b) is also an incorrect option.
Haddock fish is a member of a cod family. It has a tapering body with a typical fish structure. their mouth is referred to as a wedge shaped snout because of its structure. they have dorsal and anal fins that helps it in swimming. It has a scaly structure and a slimy body. It is also a bottom feeder.

So option d) is the correct answer.

Note:
Any fish is either a surface feeder or a bottom feeder. Bottom feeders are those fishes that grab their food from deep grounds of water bodies. They can swim up to the deep beds of the water body to locate their prey. This is the reason they are found in deep water.