SYSTEMATIC LIST AND DISTRIBUTION OF FISHES IN MIZORAM, TRIPURA AND BARAK DRAINAGE OF NORTHEASTERN INDIA

you can find the numbers of fishes documented so far under the given link
http://www.zoosprint.org/ZooPrintJournal/2007/March/2599-2607.pdf

Major rivers and its tributaries

The rivers of Mizoram constitute a major part of the topography of Mizoram. Aided by heavy rainfall during the rainy seasons and occasional rainfall throughout the year, most of the Mizoram rivers are perennial in nature.

Some of the rivers flowing through Mizoram are:

Tlawng or Dhaleshwari,
Teirei,
Tuirini,
Serlui,
Chhimtuipui or Kolodyne,
Khawthlangtuipui or Karnaphuli,
Tuichang,
Tuirial or Sonai,
Tuichawng,
Mat,
Tuipui or Khawchhak tuipui,
Tuivawl 

The northern part of the state comprises of some important rivers like the Tlawng or Dhaleshwari, Tuirial or Sonai and some other rivers. Rivers like Mat, Tyao, Tuichang, and Tuipui fall in the southern part of Mizoram. The rivers of Mizoram are the main source of water for the people of the state. The perennial rivers of the state feed the lush green vegetation of Mizoram.

MIZORAM: A BRIEF STORY

Perching on the high hills of North Eastern corner, Mizoram is a storehouse of natural beauty with its endless variety of landscape, hilly terrains, meandering streams deep gorges, rich wealth of flora and fauna. Flanked by Bangladesh on the west and Myanmar on the east and south, Mizoram occupies an importance strategic position having a long international boundary of 722 Kms.

World-renowed for their hospitality, Mizos are a close-knit society with no class distinction and no discrimination on grounds of sex. The entire society is knitted together by a peculiar code of ethics 'Tlawmngaihna' an untranslatable term meaning on the part of everyone to be hospitable kind, unselfish and helpful to others.

The Land :
Mizoram is a mountainous region which became the 23rd State of the Union in February 1987. It was one of the districts of Assam till 1972 when it became Union Territory. Sandwiched between Myanmar in the east and and south and Bangladesh in the west, Mizoram occupies an area of great strategic importance in the north-eastern corner of India. It has a total of 630 miles boundary with Myanmar and Bangladesh. Mizoram has the most variegated hilly terrain in the eastern part of India. The hills are steep and are separated by rivers which flow either to the north or the south creating deep gorges between the hill ranges. The average height of the hills is about 900 metres. The The highest peak in Mizoram is the Phawngpui (Blue Mountain) with a height of 2210 metres. Mizoram has a pleasant climate. It is generally cool in summer and not very cold in winter. During winter, the temperature varies from 11 C to 21 C and in the summer it varies between 20 C to 29 C. The entire area is under the direct influence of the monsoon. It rains heavily from May to September and the average rainfall in Aizawl is 208 cm. Winter in Mizoram is wonderfully blue, and in the enchanting view of wide stretches of a vast lake of cloud. Mizoram has great natural beauty and endless variety of landscape and is very rich in flora and fauna. Almost all kinds of tropical tress and plants thrive in Mizoram. The hills are marvelously green.

Climate:
The upper part of the hills are, predictably cold, cool during the summer, while the lower reaches are relatively warm and humid. Storms break out during March-April, just before or around the summer. The maximum average temperature in the summer is 30 degree C while in the winter the minimum average temperature is around 11 degree C. The four months between November and February are winter in Mizoram which is followed by the spring. The storms come in the middle of April to herald the beginning of the summer. The mercury starts rising and the hills come under the cover of a haze. The three months from June to August are know as the rainy season. The climate as at its moderate best in the two autumnal months. September and October, when the temperature moves between 19 to 24 degree C.

Taken all in all, Mizoram is made up of wooded hills, swift flowing rivers quicksilver streams and still lakes, the combination of all this is a rarity. And it is the combination of these physical features that has given Mizoram its own charm and fascination.