Wallago attu occurs all across India, Pakistan, Sri Lanka, Nepal, Bangladesh, Myanmar, Thailand, Vietnam, Cambodia and Java in Indonesia

This catfish inhabits large rivers, tanks and lakes. It is among the largest, voracious and predatory of the local catfish, which thrives well in rivers and tanks, especially in jheels with gassy magin. The fish prefers muddy tanks subject to periodical flooding from a nullah or river. A tank where this fish exists usually contains no other good fish. In order to have other fishes in the tanks and reservoirs, it is necessary to eliminate this fish. It is rather sluggish and stays at the bottom of water in search of food (Ng, 2010).

1. Overexploitation for food has resulted in population decline.

The species has been reported from the Himalayan region and elsewhere in south Asia and southeast Asia, ranging from Afghanistan, Pakistan, India (Darjeeling to Kashmir), Nepal, Bangladesh, Bhutan, Sri Lanka, Myanmar, western Iran to eastern Thailand.

Inhabiting the montane and submontane regions, in streams and rivers, T. putitora is a major Tor distributed in mid hills stretches of Himalayan region. It inhabits rapid streams with rocky bottom, riverine pools and lakes. The fish is a column feeder in freshwater, found in pH ranges 7.4 - 7.9 and in subtropical condition 13°C-30°C. It is omnivorous in nature during their adult stage and feed on periphytic algae and diatoms in juvenile stage. The feeding and breeding habitats are lost almost throughout their distributional range and thus this species is declining (Jha and Rayamajhi, 2010).

1. Over fishing. 2. Urbanization, illegal encroachment. 3. Chemical and physical alterations of their natural habitats.

Puntius sophore is distributed throughout India, Pakistan, Nepal, Bangladesh, Myanmar, Thailand and Yunnan (China).

It inhabits plains and submontane regions. A very plentiful shoaling fish, remaining upperciably smaller in the domestic aquarium and becoming mature at 7-8 cm. It attains a length of 13 cm. It is very common in ponds of West Bengal (Dahanukar, 2010).

No known major threats.

The species is recorded from India, Pakistan, Nepal, Bangladesh, Myanmar, Laos, Cambodia, Thailand, Vietnam, Malaysia and Indonesia.

Owing to its carnivorous nature, the Bronze featherback can only be cultivated in wild waters or in ponds in which large prey fishes are present. It breeds in stagnant or running water in the rainy season. A ripe female bears relatively fewer eggs that are laid in small clumps on submerged vegetation. This fish is relished both in fresh and dried state (Ng, 2010).

Labeo bata is found in India and Bangladesh, and is also reported from Pakistan. This species has also been introduced into reservoirs where it is cultivated.

L. bata is a benthopelagic and potamodromous species that inhabits rivers. It is an herbivorous column feeder (Devi and Ali, 2013).