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                                Anabas # Comments => Habit and Habitat: Anabas is a common south Indian fresh-water fish. It can live out of water for a long time.                               Anabas is commonly called as climbing perch. Its body is covered by flat, bony, and rounded, cycloid scales. The dorsal and anal fin is well developed and provided with long backwardly directed spines. The same is with the operculum. Anabas can walk on land with the help of the dorsal or anal fin. Their tail is perfectly symmetrical and homocercal.

                                Labeo # Comments => Habit and Habitat: Labeo is found in ponds and rivers. They are vegetarians and bottom dwellers.                       Labeo is commonly known as Rohu in Hindi. The body is covered with large overlapping cycloid scales. The snout is obtuse and blunt. The body is divided into three distinct parts head, trunk, and tail. A pair of filamentous barbels are present. The scales are flat, bony with rounded edges, hence called cycloid scales. They are of taxonomic value. Dorsal, anal, caudal, paired pectoral and ventral fin with soft fin rays are present. The caudal fin is divided into two equal lobes. Rohu has a great food value in India.

                               Diodon  # Comments => Habit and Habitat: Diodon is confined to tropical seas, living along near reefs, caves, or ledges, hunting crustaceans and molluscs at night.  Diodon is commonly known as porcupine fish. Its body is rounded, globose, and covered with numerous flexible spines, the organs of defense; they are erected to protect the fish from any external enemy's attack. This fish can also inflate its body by swallowing water. The scales are generally spiny or bony. The caudal fin is rounded and tilted Upwards. The anal fin is opposite to the dorsal fin. There are 3 gills present. The belly is inflatable. The skin is leathery. Although porcupine fishes are poisonous, they are eaten as food fish and are an exotic delicacy in Japan and Indonesia.

                              Heteropneuptes # Comments => Habit and Habitat: It is found in rivers, estuaries, lakes, ponds, and ditches. They usually move in shoals.                                It is commonly called Singhi in Hindi. Its head is flattened and covered with thin skin. Flat snout with mouth and 4 pairs of barbels. The pectoral fin is quite strong with poisonous spines. The dorsal fin is short and without a spine. The anal fin is elongated and reaches up to the caudal fin but is separated by a deep notch. It has an accessory respiratory organ. Air bladder is also present. It is very popular as food fish and for its medicinal properties.

                              Exocetus # Comments => Habit and Habitat: Exocetus is found in the sea, often skittering near the boats. It is pelagic and feeds in small fishes and prawns. They form shoals of fish.                                                     Exocetus is commonly known as flying fish. Their body is covered with overlapping cycloid scales. Dorsal and anal fins are short and supported by fin rays. It has a pair of large pectoral fins enormously well developed to form a wing-like structure, which is used as a parachute to survive out of water. An air bladder is also present. Several black spots are present on the pectoral fin. Their tail is hypobatic. It serves as a food delicacy.                 

                             ANGUILLA # Comments  => Habit and Habitat: Anguilla is a freshwater voracious and catadromous fish that can live outside water for several hours. Anguilla is commonly called as the eel. Its body is slender, elongates, and snake-like. Operculum covers the gill slits on either side. A continuous fin is formed by the fusion of the dorsal fin, anal fin, and caudal fin. The body is covered by minute scales embedded in the skin and arranged obliquely at right angles to one another. Air bladder is present.

                                   Mystus  #Comments  => Habit and Habitat: Mystus is found in rivers, ponds, tanks, floodplain areas. It inhabits in flowing water system also found in standing water with macrophytes and sandy & muddy bottom.                                It is commonly known as Adriai Tenyer. Its body is divided into head, trunk, and tail.  The snout is spatulated. Dorsal, pectoral, pelvic, caudal and ventral fins are present. The first dorsal fin contains a weak and raised dorsal spine whereas the second dorsal fin is a much smaller adipose fin. This fish is used as a common man's food but aquarist like it as ornamental fish.  The back is slightly darker, usually pale. Mouth lacks teeth.