Fish zones

Sampling areas

Elevation

Temperature (°C )

Water velocity (m/sec)

Habitat guilds

Preferred spawning habitat

AT

WT

High-mid altitude zone

Rishi Khola

Moderate to high (1093-1000 ft) elevation watersheds dominated by side slopes with gentle slopes and steep slopes.

21-23.7

18.5-21

2.1-2.9

1

1

Primary forest; hilly terrain

Lithophils / lithopelagophils

Rungpo

(26°10'21.94'' N;

88°31'46.73'' E)

21.1-24.5

19.5-21

1.9-2.2

15

31-32.5

Secondary forest

Mid altitude zone

Teesta Bazaar

(26°00'03.97'' N;

88°26'31.80'' E)

Moderate (628 ft) elevation watersheds dominated by side slopes and gentle slopes.

24-27

20.7-24.9

1.6-1.9

20

23-25

Secondary forest;

ongoing construction work of Teesta Barrage project

Lithoplegophils / Speleophils

Low altitude-plain zone

Sevoke

(26°53'25.37'' N;

88°28'22.97'' E)

Moderate to low elevation (500 ft) watersheds dominated by gentle slopes with substantial areas of flats and side slopes; river hits the plain at this site.

18.5-25.2

15.4-18.5

1.3-1.6

7.4-21

24-25

Secondary forest

Lithoplegophils /  Psammophils

River plains

Gojoldoba

(26°45'08.55'' N;

88°35'05.04'' E)

Low elevation

(380-187 ft) dominated by flats, pastured land and urban inhabitation.

30.1-35.5

28.2-31

0.9-1.4

40

25-27

Secondary forest; urban area; presence of Teesta Barrage

Phytophils / Phytolothophils

Domohoni

(26°33'47.11'' N;

88°45'39.34'' E)

34-35.7

30.1-31

0.45-0.9

Agriculture land; urban area

Haldibari

(26°20'52.00'' N;

88°54'16.76'' E)

33.7-37.2

29.9-31.1

0.45-0.55

20-21

Agriculture land; urban area

Phytophils / polyphils