By FERDINAND STARMÜHLNER ') Manuskript eingelangt am 9. Mai 1983

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1 Ann. Naturhist. Mus. Wien 86 B Wien, November 1984 Results of the AustrianIndian Hydrobiological Mission 1976 to the AndamanIslands: Part VII: ist of ishes collected in running Waters of the Andaman Islands By ERDINAND STARMÜHNER ') Manuskript eingelangt am 9. Mai 1983 Abstract In the running waters of South and NorthAndaman seven species of fishes were recorded: Clarias batrachus (INNÉ, 1758); Heteropneustes fossilis (BOCH, 1797); Aplocheilus panchax (HAMI TON & BUCHANAN, 1822); Doryichtys insularis (HORA, 1925); Ophiocephalus (= Channa) gachua (HAMITON & BUCHANAN, 1822); Eleotris andamanensis (HERRE, 1939); Periophthalmus barbarus (INNÉ, 1758). The AustrianIndian Hydrobilogical Mission 1976 to the AndamanIslands has collected in different running water systems of South and NorthAndaman between headwaters and the mouthzones. The recorded specimens of fishes were determinated by J. P. GOSSE (Chief of the Section of ishes; Royal Institut of Natural Science of Belgium, Brussels). We thank gratefully Mr. GOSSE for his work. ollowing species were found: SuperClass: PISCES Class: Osteichtys SubClass: Acanthopterygii SuperOrdo: Teleostei Ordo: Siluriformes amilia: Clariidae Genus: Clarias 1. Clarias batrachus (INNÉ, 1758) ocality: S.And./e : Rivulet near the village of Bimblton, E of Port Blair; flowing through paddyfields; borderd by some trees and scrub; sunny; in deeper pools wateringplace for buffalos. ') Univ. Prof. Dr.. STARMÜHNER, Institut of Zoology, University of Vienna, Althanstr., B. P. 282, A90 Wien. (Promoted by the ONDS ZUR ÖRDERUNG DER WISSENSCHAT, Project: No and the Kulturamt der Stadt Wien.)

2 220. STARMÜHNER 30 m 2 m c: 35 cm; b, p: 50 cm 1 m 3050 cm/sec; b, p: 0 cm/sec muddy gravel (35 cm 0) b, p: mud, vegetable debris 25.7 ( h ) C (17 h ) Alg: Cladophora sp.; b, p: paddings of Rhizoclonium sp., Oedogonium sp., Hydrosera whampoensis; cf. Characea 26 turbid (visibility: 20cm) turbid (visibility. 20 cm) 1 specimen Distribution: India, Ceylon, Malay Peninsula and Archipelago, Philippines. amilia: Heteropneustidae Genus: Heteropneustes 2. Heteropneustes fossilis (BOCH, 1797) ocalities: S.And./eV : Description see above by Clarias batrachus. 5 specimens. S.And./13 b/ : Recurrent flow of a very slowflowingcreek with large, deep pools near Mithakhrai; situated in a dense forest and very shady. 20 m 25 m 30 cm >1 m 0 cm/sec muddy sand; some stones, vegetable debris C (15 h ) turbid (visibility: cm) 7 specimens Distribution: Nepal, Hindustan, India, ESAsia. Ordo: Atheriniformes SubOrdo: Cyprinodontoidei amilia: Cyprinodontidae Genus: Aplocheilus 3. Aplocheilus panchax (HAMITON & BUCHANAN, 1822) ocalities: S.And./9A/ : Rivulet near Tayaledrabad; flowing through paddyfields and swamps; sunny; in the pools wateringplace for buffalos. 20 m 23 m 25 cm; p: 50 cm 3050 cm/sec b, p: 020 cm/sec gravel (35 cm 0); mud, sand; vegetable debris 26.6 (16 h ) 25.5 C (17 h ) 7 11 some specimens

3 ist of ishes collected in running Waters of the AndamanIslands 221 S.And.// : Description see above by Clarias batrachus. S.And./16/ : Rivulet near Matra; flowing through paddyfields; sunny. 20 m 23 m 5 cm; b, p: 50 cm >1 m; 3050 cm/sec; b, p: muddy sand 25.1 C (13 h ) After a heavy rain the station was overflooded and no sample was taken! some specimens S.And./19/ : Rivulet near Allahmajid; affluent of the Dhanikarireservoir; bordered by dense primary forest, very shady. Alg: 200 m 3 m 20 cm; p: 50 cm 2030 cm/sec; b, p: 0 cm/sec serpentine rocks, boulders (50 cm 0); gravel, sand and b, p: mud, vegetable debris Nos toc sp., Compsogon caeruleus; b, p: Nostochopsis lobatus, cf. Bostrychia radicans, Hydrosera whampoensis 24.6 ( h ) _ some specimens C ( h ) N.And./4/ : Rivulet akshmipur; approx. 5 km SW of Diglipur; meandering through secondary forest; bordered partly by meadows and scrub; sunny. B: Alg: 20 m 25 m 35 cm/sec;. p: 50 cm 3050 cm/sec; b, p: 0 cm/sec gravel (35 cm 0); b, p: muddy sand dense growth of filamnetous Spirogyra sp.; Compsogon caeruleus 25.6 (IO")27.1 C( h ) Col.: somes specimens Distribution: India, Malay Peninsula and Archipelago, Thailand.

4 222. STARMÜHNER Ordo: Gasterosteiformes SubOrdo: Syngnathoidei amilia: Syngnathidae Genus: Doryichtys 4. Doryichtys insularis (HORA, 1925) ocalities: S.And./4 a, b/ : Rivulet in the area of Chidiatop; approx. 300 m upstream of the mouthzone and about 0 m upstream of the influence of brackish water of the recurrent flow during hightide; flowing through plantations, paddyfields and bordered by scrub and some trees; partly shady, partly sunny; floating roots and plants on the border. m 23 m 5 cm; p: 1530 cm 3050 cm/sec; b, p: 0 cm/sec boulders (20 cm 0); gravel Alg: c: floating Spirogyra cf. decimi na; p: 150 m downstream in the brackish zone: Thorea ramosis sima 25.1 (9. 30 )27.6 C(ll h ) specimens near the border between floating roots and plants from the border <0.01 N.And./2 1/ : River Kalimpong on the Wslope of the Saddle Peak, approx. 4 km S of Diglipur; broad valley; righthand the steep slopes of the Saddle Peak with dense primary forest, lefthand ed area with scrub and behind paddyfields; sunny. B: 50 m 3040 m; during dry season divided in 23 branches of 5 m 520 cm; b, p: 50 cm >1 m 50 cm/sec; b, p: 0 cm/sec boulders (520 cm 0), gravel; b, p: sand amud, vegetable debris Col.: 24.9 ( h ) Alg: paddings of Spirogyra sp. I specimen Z" 1 /l T3U\ l^ \l ) (!) < Distribution: Endemic for the Andamans; other species of the genus Doryichtys are widely distributed in coastal rivers of the Indopacific. Ordo: Ophiocephaliformes (= Channiformes) amilia: Ophiocephalidae (= Channidae) Genus: Ophiocephalus (= Channa) 5. Ophiocephalus (= Channa) gachua (HAMITON & BUCHANAN, 1822) ocality: S.And./19 d/ : Description see above by Aplocheilus panchax: 1 specimen.

5 ist of ishes collected in running Waters of the AndamanIslands 223 Distribution: Beluchistan, Afghanistan, India, Ceylon, Malay Peninsula and Archipelago. Ordo: Perciformes SubOrdo: Gobioidei amilia: Gobiidae Subfamilia: Eleotrinae Genus: Eleotris 6. Eleotris andamanensis (HERRE, 1939) ocality: S.And./4 b/ : Description see above, by Doryichtys insularis. 2 specimens. Distribution: Endemic for the Andamans; other species of the genus Eleotris are widely distributed in coastal rivers of the Indopacific. Subfamilia: Gobiinae Genus: Periophthalmus 7. Periophthalmus barbarus (INNÉ, 1758). ocality: S.And./17B/ : Small torrent from the hills near the TouristHome of Port Blair, mouthregion in opposite of the isheries Jetty of the Harbour; the brook flows in the part of the mouth during the low tide approx. 0 m to the sea; during high tide this area is covered by sea water, flowing in a recurrent flow to the hill araea, also during low tide slightly brackish. B: 1 m to mean sea level m (low tide) 5 cm (low tide) gravel, sand, dead coralls, empty shells 28.1 C (15 h ) > specimens Distribution: Shallows and brackish areas of the Indopacific. Abbrevations Altitude (in m above mean sealevel); Breadth of the running water (in m); Depth of the running water (in cm or m); b: near the banks on the borders; p: in pools between cascades; c: cascades; velocity of the Current (in cm/sec or m/sec); Colour of the water; Ground (mud, sand, gravel, boulders, rock); 0: Diameter of stones or boulders; Alg: growth on Algae; Temperature of the water (in Celsius); Chemistry of the watersamples from the station; : vaiues found at the stations with ieidmeihous; : values determinated in the aboratory with exact laboratorymethods; electrolytic Conductivity (in [i Siemens by 20 C); ph; Total Hardness (in German Hardness Degrees dh); Carbonat Hardness (in KH degree); Alcalinity (in mval/1); content on Naions (in mg/1); content on Magnesiumions (in mg/1); content on Kaliumions (in mg/1); content on Calciumions (in mg/1); CI: content on Chloridions (in mg/1); content on Total iron (in mg/1); content on Silicate (in mg/1); : no measurement were executed.

6 224. STARMÜHNER References STARMÜHNER,. (1978): Results of the AustrianIndian Hydrobiological Mission 1976 to the AndamanIslands: Part I: Preliminary Report: Introduction, Methods, General Situation of the Islands, Description of the Stations and General Comments on the Distribution of the auna in Running Waters of the Islands. Aquatic Biology, 2: 139.

Manuscript submitted November 10th 1986

Manuscript submitted November 10th 1986 Ann. Naturhist. Mus. Wien 91 B 43-51 Wien, 20. April 1990 Results of the Austrian-Indian Hydrobiological Mission 1976 to the Andaman-Islands: Part X: List of Aquatic Hemiptera collected in the inland waters

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