分类 / Names
俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii
辐鳍鱼纲 (条鳍鱼) >
Siluriformes (Catfish) >
Mochokidae (Squeakers or upside-down catfishes)
Etymology: Microsynodontis: Greek, mikros = small + Greek, synodon = with the teeth growing all together (Ref. 45335); nasutus: Species name from the Latin nasutus, meaning large nosed, in reference to the long snout of this species (Ref. 52369).
环境 / 气候 / 范围
生态学
; 淡水 居于水底的. , preferred ?
Africa: Ogowe River, Gabon (Ref. 52369).
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 3.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 52369)
简单描述
型态特徵 | 形态测量图
背棘 (总数): 2; 背的软条 (总数): 7; 臀棘 0; 臀鳍软条: 10 - 11; 脊椎骨: 36. Body compressed (Ref. 52369). Predorsal profile gently convex; postdorsal body sloping gently ventrally (Ref. 52369). Head depressed and broad, broadly rounded when viewed laterally and with rounded snout margin when viewed from above (Ref. 52369). Eye ovoid, horizontal axis longest (Ref. 52369). Distinguished from other Microsynodontis species by having a longer snout, 50.0-53.3% of head length (Ref. 52369). %Mouth inferior and crescent-shaped; lips plicate (Ref. 52369). Barbels in three pairs; maxillary barbel long and slender, extending to just beyond base of last pectoral-fin ray; inner mandibular-barbel origin close to midline, extending to base of pectoral spine and with 2 short, thin branches on anterior half and 3-5 long, thin branches on posterior half; outer mandibular barbel originates posterolateral of inner mandibular barbel, extending to middle of pectoral-fin base and with 3-5 long, thin branches (Ref. 52369). Gill openings narrow, extending from immediately ventral to posttemporal to immediately ventral to base of pectoral spine (Ref. 52369). Dorsal fin located at anterior third of body, with convex margin; dorsal-fin spine long, stout and slightly curved, smooth on both anterior and posterior margins (Ref. 52369). Adipose fin moderately long; margin slightly convex for entire length and posterior end deeply incised (Ref. 52369). Caudal fin rounded, with i,5-6,5-6,i principal rays (Ref. 52369). Anal-fin base located ventral to posterior half of adipose fin, with iv-v,6 rays and convex margin (Ref. 52369). Pelvic-fin origin at vertical ventral to posterior end of dorsal-fin base, with slightly convex margin (Ref. 52369). Pectoral-fin spine slightly curved and stout; anterior spine margin with 16-22 small serrations along entire length of spine, serrations antrorse on distal two thirds and anteriorly directed on proximal third; posterior spine margin with 7-9 strong serrations along entire length (Ref. 52369). Lateral line complete and midlateral (Ref. 52369). Dorsal and lateral surfaces of head and body medium brown, fading to cream or light grayish brown on ventral third of body, belly, and ventral surface of head in preserved specimens (Ref. 52369). Snout with a series of cream spots delineating anterior and posterior nares; cheek region with one or two cream spots immediately ventral to orbit; cream band encircling nape at supraoccipital (Ref. 52369). Dorsal third of body with series of four cream vertical bar-shaped marks extending beyond lateral midline of body: first at middle of dorsal-fin base, second at adipose-fin origin, third at middle of adipose-fin base and last on caudal peduncle immediately posterior to adipose fin (Ref. 52369). Ventral third of flanks with a longitudinal series of five to seven cream spots or vertical bar-shaped marks (Ref. 52369). Dorsal, pectoral, pelvic and anal fins hyaline and sometimes with one or two rows of faint spots forming longitudinal brown rows; caudal fin with similar series of elongate marks forming two to three irregular columns (Ref. 52369).
Found in a whitewater river (Ref. 52369).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ng, H.H., 2004. The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species. Zootaxa 531:1-52. (Ref. 52369)
CITES (Ref. 94142)
Not Evaluated
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场孕卵数卵卵的发育
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参考文献养殖养殖信息品种遗传学基因序列遗传率疾病加工Mass conversion
合作者照片Stamps, Coins声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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