摘要
在浙江省灵江水系上游横溪镇附近溪流中，采到１种吻虾虎鱼属鱼类，经鉴定为１新种。根据该种鱼类颊部具１—４条明显的细斜纹，定名为颊纹吻虾虎鱼ＲｈｉｎｏｇｏｂｉｕｓｇｅｎａｎｅｍａｔｕｓＺｈｏｎｇｅｔＴｚｅｎｇｓｐｎｏｖ。
お? A new species of Rhinogobius collected in the brooklet of Ling Jiang River system (Hengxi town,Zhejiang Province) in 1997 was described in this paper It is very similar to the Rhinogobius davidi (Sauvage et Dabry) in the external form,but defers in many characters The description of the present species is as follows Rhinogobius genanematus Zhong et Tzeng sp nov Holotype:No SFU-3784,276 mm in standard length (SL),male,collected from Hengxi (120°20′E,28°40′N),Ling Jiang River system,Zhejiang Province,in April 4,1997 Paratype:Nos SFU-3785-3787,252-283 mm in SL,male;Nos SFU-3788-3789,232-243 mm in SL,female,same locality and date as holotype All type specimens are deposited in the Laboratory of Fishes,Shanghai Fisheries University Description:D Ⅵ,Ⅰ-8-9;A Ⅰ-7;P1 15;P2 Ⅰ-5;C 16-17 LS 28-29;TR 8-9;Pred S 0 Gill rakers 2+8 Depth of body 55-64 in SL,head length 32-34 Snout 39-44 in head,eye diameter 43-54,interorbital 79-97 Body elongate,anterior subcylindrical and posterior compressed Head moderate Cheeks slightly fat Snout blunt,eye diameter 11-13 Eye smaller,dorso-lateral,locate at anterior part of the head Interorbital narrow,less than the diameter of eye Nostrils two Mouth moderately,oblique The upper jaw a litter prominent,maxillary extends to below anterior part of eye (males) or not (females) Teeth on jaws small and pointed,in several rows Tongue rounded,anterior edge free Gill-opening wide Gill rakers slenderBody covered with ctenoid scales,the anterior larger Snout,cheek,opercles,tho-rax,belly and pectoral base naked Without predorsal scale and lateral line Two dorsals separated,the 3rd spine of lst dorsal longest,spiny dorsal extending (in male) or not reaching (in female) the origin of 2nd dorsal when depressed Anal fin similar and opposite to 2nd dorsal,2nd dorsal and anal fin not reaching the caudal base in either sex Pectoral broad and elliptical Pelvic united into a round sucking disc,with frenum and connecting membrane Caudal rounded,shorter than head Body shallow brownish,side of the body with five to six irregular black-brown spots,the last on caudal base,“<”-shape Every scale in the ventral side of body with a elliptical or irregular reddish orange spot and with a pale edge In male,cheek with three to four towards,downwards and oblique thinly black-brown stripes,the posterior part of the first one branched off two stripes But in female,only with one to two stripes A dark line forward from lower margin of eye,then abruptly downward to the terminal of lower jaw Branchiostegal region also with seven to eight rows reddish-orange stripes extend upwards to the latter half of opercle in males The upper part of the first dorsal fin reddish orange,and the second pale with shallow margin and with three to four longitudinal rows small brown spots in the median Anal fin pale,in males the upper part with three to four oblique rows reddish orange stripes In the median of pectoral base with a black spot and a reddish orange semilunar stripe behind and near it Pelvic pale Caudal strongly pale,with five to six rows black brown transverse stripes and shallow margin Etymology:The name is derived from the “gen-” and “nemato”, in reference to its cheek with one to five clearly and thinly stripes Distribution:This new species is known only from in the brooklet of Ling Jiang River system,Zhejiang Province,China Remarks:The new species is similar to the Rhinogobius davidi (Sauvage et Dabry) with one dark line forward from lower margin of eye,then abruptly downward to the terminal of lower jaw,but defers in following:cheek with 1-4 clearly thinly stripes;in male,from the lower part of opercle to the branchiostegal with 7-8 rows reddish orange transverse stripes;interobital much narrow,less than diameter;transverse scales 8 to 9 The latter cheek without stripes;opercle and branchiostegal without str
基金
上海新星天然食品有限公司水产科普基金
