Question

Name three common freshwater and three marine edible fishes

Answer 1

Hint: Fishes belong to the phylum chordata. They are gill bearing animals that do not have limbs and digits. They can be seen in freshwater environments or in seas and some are edible while others are not.

Complete step-by-step answer:
Fishes from both of these environments can be edible. Some common edible freshwater fishes include Catla, Rohu, and certain species of common carps. Some common edible marine fishes are Sardines, Mackerels and Pomfrets (also called as butterfish).
Fishes form an important part of diet in many parts of India. They have immense nutrients and hence are good for health. However not all fishes are edible. Based on the source from which they are obtained, fishes can be marine if obtained from oceans and seas or freshwater if obtained from lakes and rivers.

Additional Information:
-Freshwater fishes and Marine water fishes have differing physiology to adapt to their environments.
-Freshwater fishes are found in water bodies like rivers, lakes and ponds. Their body tissues contain more salt than water around them, to prevent osmotic loss of water to the outside.
-Marine fishes on the other hand live in environments like seas and oceans with abundant salt. So, to balance that they have more salt in their body than the surrounding environment.

Note: -There are fishes that live in environments other than freshwater or marine water. They are called brackish water fishes.
-Brackish water has salinity more than freshwater, but less as compared to salty sea water. Catfishes and Pufferfishes are some of the examples.