Vol. 110 - Part III - Zoological Survey of India

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BAHUGUNA : Trichotaxonomy of Indian species of Genus Ratufa Gray 57PLATE 12Ratufa macroura (Pennant 1769)Tail58 5960 61Figs. 58-61. Photomicrographs using compound light microscope58 : Medulla type : Wide Aeriform Lattice with indentations (x200)59 : Cross section : oblong, large sized medulla (x200)60-61 : cuticular pattern at mid (Fig 60) SP regular wave, SM rippled, DS near (x200), at distal (Fig 61) SP regularwave, SM rippled, DS near (x200)
Rec. zool. Surv. India : 110(Part–3) : 59-60, 2010OCCURRENCE OF A REEF FISH, PARAMONACANTHUS JAPONICUS(TILESIUS, 1809) IN VELLAR ESTUARY, SOUTH EAST COAST OF INDIAMANISH KUMAR*, T.T. AJITH KUMAR AND S. RAVICHANDRANCentre of Advanced Study in Marine Biology, Annamalai UniversityParangipettai-608 502, Tamilnadu*Email : manifisheries@yahoo.co.inINTRODUCTIONParamonacanthus japonicus is a coral reef fishbelonging to the family Monacanthidae of the classActinopterygii and the order Tetraodontiformes. Thisspecies was first reported by Tilesius (1809) from theJapan coast. Even though it occurs in marine waters,its origin is originally from reef region (http://www.zipcodezoo.com). Some members of this family areused for aquarium trade also. There are approximately22 species were reported in this genus (http://www.zipcodezoo.com). Among the various group of thisfamily, P. japonicus is found to be common in reefregions, lagoons and soft bottom areas of the sea. Inthe present study, this species was recorded for thefirst time as shoal in the Vellar estuary and there is noearlier report available for their distribution in Indianestuaries.In a routine survey of fishes made at the Vellarestuary revealed that a large number of P. japonicus(Fig. 1) was recorded. The fishes were found in theupper reaches of the Vellar estuary on 15 th March, 2009and no specimen was found in the subsequent days.The fishes were collected by encircling the net andimmediately after collection they were transported tothe hatchery and accommodated into a glass tank filledwith fresh and filtered estuarine water with artificialaeration. 20 nos. of fishes were collected, in which thelargest fish measuring was 63 mm length, 45 mm bodydepth and 6.85 gm weight. The water sample was alsocollected from the fishing site and the physicochemicalparameters were recorded. The salinity was 25 ppt, D.O.6 mg/l, temperature 28ºC and pH 7.8.SYSTEMATIC ACCOUNTOrder TETRAODONTIFORMESFamily MONACANTHIDAEParamonacanthus japonicas (Tilesius, 1809)DESCRIPTIONThe body was laterally compressed. Head and thebody covered with lathery skin, very dark or brown incolour and they had three dark distinct bands on thebody in upward direction. The caudal fin was wedgeshaped and anal fin had rudimentary spines with 2-3dark brown vertical bands. The first dorsal fin has oneTable-1 : Morphometric characters.CharactersMeasurements(cm)Total length 6.3Standard length 4.91 st dorsal fin length 2.12 nd dorsal fin length 0.7Pectoral fin length 0.7Anal fin length 0.6Caudal fin length 1.4Pectoral fin length 0.32 nd dorsal fin base length 1.7Anal fin base length 1.6Distance from snout to 1 st dorsal 1.9Distance from snout to gill slit 1.9Eye diameter 0.4
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COMPUTERISED DATA ON NATIONAL ZOOLO
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INSTRUCTION TO AUTHORSFrequency of
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MITRA & MEHTA : A preliminary note
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GHOSH, BASU ROY AND DUTTA : Occurre
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Vol. 110 - Part III - Zoological Survey of India

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