電(dian)(dian)(dian)(dian)鰩,軟骨魚(yu)綱電(dian)(dian)(dian)(dian)鰩目魚(yu)類的(de)統稱。最大(da)的(de)個(ge)體(ti)可以達到(dao)2米，很少在(zai)(zai)0.3米以下(xia)。背腹(fu)扁平，頭和胸部在(zai)(zai)一起。尾(wei)部呈(cheng)粗(cu)棒(bang)狀(zhuang)，像團扇(shan)。電(dian)(dian)(dian)(dian)鰩棲(qi)居在(zai)(zai)海底，一對小眼長在(zai)(zai)背側面(mian)前方的(de)中(zhong)間(jian)。在(zai)(zai)頭胸部的(de)腹(fu)面(mian)兩側各有(you)一個(ge)腎臟形蜂窩狀(zhuang)的(de)發電(dian)(dian)(dian)(dian)器。它們排列成六角(jiao)柱體(ti)，叫“電(dian)(dian)(dian)(dian)板(ban)”柱。電(dian)(dian)(dian)(dian)鰩身上共(gong)(gong)有(you)2000個(ge)電(dian)(dian)(dian)(dian)板(ban)柱，有(you)200萬(wan)塊“電(dian)(dian)(dian)(dian)板(ban)”。這些電(dian)(dian)(dian)(dian)板(ban)之間(jian)充滿(man)膠質狀(zhuang)的(de)物質，可以起絕(jue)緣作用。每(mei)個(ge)“電(dian)(dian)(dian)(dian)板(ban)”的(de)表面(mian)分(fen)布有(you)神經(jing)末梢，一面(mian)為(wei)負(fu)電(dian)(dian)(dian)(dian)極，另一面(mian)則為(wei)正電(dian)(dian)(dian)(dian)極。電(dian)(dian)(dian)(dian)流的(de)方向是(shi)從正極流到(dao)負(fu)極，也(ye)就是(shi)從電(dian)(dian)(dian)(dian)鰩的(de)背面(mian)流到(dao)腹(fu)面(mian)。在(zai)(zai)神經(jing)脈沖的(de)作用下(xia)，這兩個(ge)放電(dian)(dian)(dian)(dian)器就能(neng)把(ba)神經(jing)能(neng)變成為(wei)電(dian)(dian)(dian)(dian)能(neng)，放出電(dian)(dian)(dian)(dian)來。亦(yi)稱torpedofish、numbfish或crampfish。共(gong)(gong)有(you)3科10屬(shu)38種，中(zhong)國產2科5屬(shu)8種，常見的(de)如黑(hei)斑雙鰭電(dian)(dian)(dian)(dian)鰩（Narcine maculata、舌形雙鰭電(dian)(dian)(dian)(dian)鰩（N.lingula）、日(ri)本單鰭電(dian)(dian)(dian)(dian)鰩(Narka japonica)。
雙(shuang)鰭電鰩科：分布于太(tai)平洋(yang)、印(yin)度洋(yang)和大西洋(yang)西部各沿(yan)岸海區；中國產3種，均只(zhi)見于南海；
單(dan)鰭(qi)電鰩科：分布于(yu)(yu)印度-西太平洋。中國有2屬(shu)2種：①單(dan)鰭(qi)電鰩屬(shu)，只日(ri)本(ben)單(dan)鰭(qi)電鰩，分布于(yu)(yu)中國沿海(hai)，朝鮮和日(ri)本(ben)南(nan)部沿海(hai)；②堅皮(pi)(pi)單(dan)鰭(qi)電鰩屬(shu)，只堅皮(pi)(pi)單(dan)鰭(qi)電鰩，分布于(yu)(yu)南(nan)海(hai)、東海(hai)南(nan)部及日(ri)本(ben)南(nan)部；
無(wu)鰭電(dian)鰩科：只1屬1種(zhong)，分(fen)布于馬來半島(dao)、印度支那南部沿岸。
眼小(xiao)而突出(chu)；噴水孔邊緣(yuan)隆起；前(qian)鼻瓣寬(kuan)大(da)，伸達(da)(da)下(xia)唇；皮膚柔(rou)(rou)軟(ruan)。背鰭一個。頭側(ce)與(yu)(yu)胸(xiong)鰭間(jian)有大(da)型發電器(qi)。體盤(pan)亞圓形。腹鰭外角不突出(chu)，后緣(yuan)平直(zhi)。尾具側(ce)褶。背部(bu)赤褐色，具少數(shu)不規則暗斑。鰓孔5個，狹(xia)小(xiao)，直(zhi)行排(pai)列。齒細小(xiao)而多。頭側(ce)與(yu)(yu)胸(xiong)鰭間(jian)具1對發達(da)(da)的(de)卵圓形發電器(qi)官，由肌肉組織變異而成，發電時的(de)電壓一般在(zai)75-80v，最高(gao)可(ke)達(da)(da)200v。體表(biao)柔(rou)(rou)軟(ruan)。尾鰭發達(da)(da)，體長(chang)可(ke)達(da)(da)1.5m，體重可(ke)達(da)(da)6.1kg。口小(xiao)或中(zhong)大(da)，唇褶發達(da)(da)。眼小(xiao)。
生境：近(jin)海底棲(qi)魚類。
分布：沿海(hai)，但很少見到。但在黃海(hai)、渤海(hai)中常見。
電鰩長約750px～2m，體(ti)柔(rou)軟，皮膚光滑，頭(tou)與胸(xiong)鰭形(xing)成(cheng)圓(yuan)或近于圓(yuan)形(xing)的體(ti)盤。發(fa)電器一(yi)對，由(you)變態(tai)的肌肉(rou)組織(zhi)構成(cheng)，位于體(ti)盤內，頭(tou)部兩側(ce)能發(fa)電，用于防御和(he)捕(bu)獲獵物(wu)，大型電鰩發(fa)出的電流足以擊(ji)倒成(cheng)人。
體(ti)盤(pan) 橢圓(yuan)(yuan)形(xing)，寬(kuan)稍小于(yu)(yu)(yu)長(chang)(chang)；尾寬(kuan)短(duan)(duan)，稍短(duan)(duan)于(yu)(yu)(yu)頭和軀干之長(chang)(chang)，比體(ti)盤(pan)為長(chang)(chang)，側(ce)(ce)褶很低，幾消失。吻(wen)頗長(chang)(chang)，前(qian)(qian)(qian)(qian)端(duan)廣(guang)圓(yuan)(yuan)；吻(wen)軟(ruan)(ruan)骨柔(rou)軟(ruan)(ruan)，細(xi)長(chang)(chang)，正中(zhong)一(yi)條(tiao)。眶前(qian)(qian)(qian)(qian)軟(ruan)(ruan)骨很發(fa)達(da)，側(ce)(ce)位，分(fen)作多(duo)(duo)枝，里側(ce)(ce)以韌帶連于(yu)(yu)(yu)吻(wen)軟(ruan)(ruan)骨基側(ce)(ce)。眼微小，埋于(yu)(yu)(yu)皮下，位于(yu)(yu)(yu)噴水孔(kong)里側(ce)(ce)上(shang)角。噴水孔(kong)頗大，橢圓(yuan)(yuan)形(xing)。邊緣光(guang)滑(hua)，平(ping)坦或微突起。鼻孔(kong)小；鼻口溝很短(duan)(duan)；前(qian)(qian)(qian)(qian)鼻瓣連合為一(yi)口蓋；后鼻瓣短(duan)(duan)小，具一(yi)半環(huan)狀薄膜。口小，平(ping)橫，口前(qian)(qian)(qian)(qian)具一(yi)深(shen)溝，能突出(chu)；口寬(kuan)約等于(yu)(yu)(yu)口前(qian)(qian)(qian)(qian)吻(wen)長(chang)(chang)2/5；唇軟(ruan)(ruan)厚而皺；上(shang)唇分(fen)兩側(ce)(ce)和中(zhong)央三(san)部(bu)；下唇寬(kuan)而連續(xu)。牙細(xi)小而多(duo)(duo)，平(ping)扁，齒頭低平(ping)后突，上(shang)下頜(he)各14~5縱行；齒面(mian)不外露(lu)。鰓(sai)孔(kong)很小，直行排列。
胸部(bu)前延，到達(da)鼻囊前緣(yuan)(yuan)的(de)(de)水平線，前端(duan)寬廣地被軟(ruan)吻軟(ruan)骨及眶前軟(ruan)骨隔開(kai)；前后(hou)(hou)(hou)緣(yuan)(yuan)連(lian)續(xu)，后(hou)(hou)(hou)部(bu)狹直，無(wu)里(li)緣(yuan)(yuan)和后(hou)(hou)(hou)角。腹鰭(qi)前角圓鈍(dun)，顯著突出，后(hou)(hou)(hou)緣(yuan)(yuan)深凹，里(li)緣(yuan)(yuan)很(hen)短可消失，后(hou)(hou)(hou)角尖小。背(bei)鰭(qi)一個，頗小，起點在(zai)腹鰭(qi)基底之后(hou)(hou)(hou)，前、后(hou)(hou)(hou)、里(li)緣(yuan)(yuan)分明(ming)，前后(hou)(hou)(hou)角圓鈍(dun)，與(yu)尾(wei)基的(de)(de)距離(li)稍短于背(bei)鰭(qi)基底長。尾(wei)鰭(qi)頗寬大，上葉比(bi)下葉大，后(hou)(hou)(hou)緣(yuan)(yuan)與(yu)下緣(yuan)(yuan)斜圓形(xing)。背(bei)面灰褐(he)色或(huo)赤褐(he)色，具不規則暗色斑塊。尾(wei)側白(bai)(bai)色。體側在(zai)胸、腹鰭(qi)之間白(bai)(bai)色；腹面白(bai)(bai)色，體盤與(yu)腹鰭(qi)邊(bian)緣(yuan)(yuan)白(bai)(bai)色；有時胸、腹外側和尾(wei)之后(hou)(hou)(hou)部(bu)褐(he)色。
電(dian)(dian)鰩科(Torpedinidae)、單(dan)鰭(qi)電(dian)(dian)鰩科(Narkidae)、無(wu)(wu)鰭(qi)電(dian)(dian)鰩科(Temeridae)魚(yu)類(lei)(lei)的(de)統稱，以(yi)能發電(dian)(dian)傷人(ren)而(er)聞(wen)名。見于世(shi)界(jie)熱、溫帶水(shui)域(yu)。種(zhong)類(lei)(lei)多，多棲於(wu)淺水(shui)，但深海電(dian)(dian)鰩屬(Benthobatis)等(deng)可生活於(wu)1,000公(gong)尺(3,300呎)以(yi)下的(de)深水(shui)。活動緩(huan)慢，底棲，以(yi)魚(yu)類(lei)(lei)及(ji)無(wu)(wu)脊椎動物(wu)為食。如不(bu)被觸及(ji)則對(dui)人(ren)無(wu)(wu)害，經濟價(jia)值微不(bu)足道。
長約30公分～2公尺(1～6呎)。體柔軟，皮(pi)膚光滑，頭與胸(xiong)鰭形(xing)成圓或近于圓形(xing)的(de)體盤。發電(dian)器一(yi)對，由變態的(de)肌肉組織構成，位於體盤內，頭部(bu)兩側，能(neng)發電(dian)，用于防御和捕(bu)獲(huo)獵物，大型電(dian)鰩(yao)發出的(de)電(dian)流足以(yi)擊倒(dao)成人(ren)。古希臘(la)人(ren)及羅馬人(ren)用黑電(dian)鰩(yao)(Torpedo nobiliana)的(de)電(dian)擊治療痛(tong)風、頭痛(tong)等疾(ji)病(bing)。
軟(ruan)骨魚綱電(dian)(dian)鰩目是板(ban)腮類魚的(de)一(yi)(yi)個目，此目的(de)魚腮裂和口都在(zai)腹位，有(you)(you)五個腮裂，身(shen)體平扁卵(luan)圓形(xing)，吻不突出，臀鰭(qi)(qi)消失，尾鰭(qi)(qi)很小，胸(xiong)鰭(qi)(qi)寬(kuan)大(da)，胸(xiong)鰭(qi)(qi)前(qian)緣和體側相連接。在(zai)胸(xiong)鰭(qi)(qi)和頭(tou)之間的(de)身(shen)體每側有(you)(you)一(yi)(yi)個大(da)的(de)發(fa)電(dian)(dian)器(qi)官，能發(fa)電(dian)(dian)，以電(dian)(dian)擊敵(di)人或獵(lie)物，卵(luan)胎(tai)生，分布(bu)在(zai)熱(re)帶(dai)和亞熱(re)帶(dai)近海，半(ban)埋在(zai)泥(ni)沙中等待獵(lie)物，一(yi)(yi)般體形(xing)較小，沒(mei)有(you)(you)食用價值。根據背(bei)鰭(qi)(qi)的(de)多少，分為三科：
電(dian)(dian)(dian)(dian)(dian)鰩(yao)最大的(de)(de)(de)(de)(de)個(ge)體可(ke)以達到(dao)2米,很少在0.3米以下(xia)。背腹扁平,頭(tou)和胸部(bu)在一(yi)起。尾部(bu)呈粗(cu)棒狀,像團扇。電(dian)(dian)(dian)(dian)(dian)鰩(yao)棲居在海底,一(yi)對小眼長(chang)在背側面(mian)前方的(de)(de)(de)(de)(de)中間。在頭(tou)胸部(bu)的(de)(de)(de)(de)(de)腹面(mian)兩(liang)側各(ge)有一(yi)個(ge)腎臟(zang)形蜂(feng)窩狀的(de)(de)(de)(de)(de)發電(dian)(dian)(dian)(dian)(dian)器(qi)。它們排(pai)列成(cheng)六角柱(zhu)體，叫“電(dian)(dian)(dian)(dian)(dian)板(ban)”柱(zhu)。電(dian)(dian)(dian)(dian)(dian)鰩(yao)身上(shang)共(gong)有2000個(ge)電(dian)(dian)(dian)(dian)(dian)板(ban)柱(zhu)，有200萬塊“電(dian)(dian)(dian)(dian)(dian)板(ban)”。這些電(dian)(dian)(dian)(dian)(dian)板(ban)之間充(chong)滿膠質狀的(de)(de)(de)(de)(de)物質，可(ke)以起絕緣(yuan)作(zuo)用(yong)。每個(ge)“電(dian)(dian)(dian)(dian)(dian)板(ban)”的(de)(de)(de)(de)(de)表面(mian)分(fen)布有神(shen)經末梢，一(yi)面(mian)為負(fu)電(dian)(dian)(dian)(dian)(dian)極(ji)，另一(yi)面(mian)則為正電(dian)(dian)(dian)(dian)(dian)極(ji)。電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)(de)方向是(shi)從正極(ji)流(liu)到(dao)負(fu)極(ji)，也就是(shi)從電(dian)(dian)(dian)(dian)(dian)鰩(yao)的(de)(de)(de)(de)(de)背面(mian)流(liu)到(dao)腹面(mian)。在神(shen)經脈沖的(de)(de)(de)(de)(de)作(zuo)用(yong)下(xia)，這兩(liang)個(ge)放電(dian)(dian)(dian)(dian)(dian)器(qi)就能(neng)把神(shen)經能(neng)變(bian)成(cheng)為電(dian)(dian)(dian)(dian)(dian)能(neng)，放出(chu)電(dian)(dian)(dian)(dian)(dian)來。單個(ge)“電(dian)(dian)(dian)(dian)(dian)板(ban)”產生(sheng)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓很微(wei)弱，可(ke)是(shi)，由于(yu)數量(liang)很多，就能(neng)發出(chu)很強的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓來。電(dian)(dian)(dian)(dian)(dian)鰩(yao)的(de)(de)(de)(de)(de)每一(yi)個(ge)電(dian)(dian)(dian)(dian)(dian)板(ban)，只是(shi)肌纖維(wei)的(de)(de)(de)(de)(de)變(bian)態(tai)。發電(dian)(dian)(dian)(dian)(dian)器(qi)官是(shi)從某些鰓肌演(yan)(yan)變(bian)而來的(de)(de)(de)(de)(de)。在演(yan)(yan)變(bian)發生(sheng)過(guo)程中解除了(le)腮(sai)肌原來的(de)(de)(de)(de)(de)職務，而承擔了(le)新的(de)(de)(de)(de)(de)作(zuo)用(yong)——發電(dian)(dian)(dian)(dian)(dian)。
自我保護
發(fa)電(dian)器最主要(yao)的(de)樞紐，是器官的(de)神(shen)經部分，電(dian)鰩(yao)能(neng)隨意放(fang)電(dian)，放(fang)電(dian)時間(jian)和(he)強度，它(ta)完全能(neng)夠自(zi)己掌握(wo)。電(dian)鰩(yao)可(ke)以發(fa)電(dian),并靠發(fa)出的(de)電(dian)流擊斃水中(zhong)的(de)小(xiao)魚、蝦及其他(ta)的(de)小(xiao)動(dong)物,是一種捕食和(he)打(da)擊敵害(hai)的(de)手段。
世界上有(you)好多種電(dian)(dian)(dian)(dian)(dian)鰩,其(qi)發(fa)電(dian)(dian)(dian)(dian)(dian)能力各不(bu)相同。非洲(zhou)電(dian)(dian)(dian)(dian)(dian)鰩一(yi)次(ci)發(fa)電(dian)(dian)(dian)(dian)(dian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)在(zai)220伏(fu)左右,中等(deng)大小(xiao)的(de)(de)電(dian)(dian)(dian)(dian)(dian)鰩一(yi)次(ci)發(fa)電(dian)(dian)(dian)(dian)(dian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)在(zai)70～80伏(fu),像較小(xiao)的(de)(de)南美電(dian)(dian)(dian)(dian)(dian)鰩一(yi)次(ci)只能發(fa)出37伏(fu)電(dian)(dian)(dian)(dian)(dian)壓(ya)。由于電(dian)(dian)(dian)(dian)(dian)鰩會發(fa)電(dian)(dian)(dian)(dian)(dian)，人們叫它(ta)做(zuo)活(huo)的(de)(de)發(fa)電(dian)(dian)(dian)(dian)(dian)機、活(huo)電(dian)(dian)(dian)(dian)(dian)池(chi)、電(dian)(dian)(dian)(dian)(dian)魚等(deng)。
電(dian)(dian)(dian)(dian)鰩(yao)(yao)可以放(fang)出50安培的(de)電(dian)(dian)(dian)(dian)流(liu)(liu)，電(dian)(dian)(dian)(dian)壓達60～80伏(fu)，有海中“活電(dian)(dian)(dian)(dian)站”之稱。電(dian)(dian)(dian)(dian)鰩(yao)(yao)每秒(miao)鐘能(neng)放(fang)電(dian)(dian)(dian)(dian)50次(ci)，但連續(xu)放(fang)電(dian)(dian)(dian)(dian)后(hou)(hou)，電(dian)(dian)(dian)(dian)流(liu)(liu)逐漸減(jian)弱，10～15秒(miao)鐘后(hou)(hou)完全消(xiao)失，休息一會后(hou)(hou)又能(neng)重新恢復放(fang)電(dian)(dian)(dian)(dian)能(neng)力(li)。
電(dian)鰩的(de)放電(dian)特性啟發人們發明和創造了能貯存(cun)電(dian)的(de)電(dian)池(chi)。人們日常(chang)生(sheng)活中所用的(de)干電(dian)池(chi)，在正負極間的(de)糊(hu)狀(zhuang)填充物，就是受電(dian)鰩發電(dian)器(qi)里的(de)膠狀(zhuang)物啟發而(er)改進的(de)。
早在古希臘和(he)羅馬時代，醫生們常(chang)(chang)常(chang)(chang)把病人放到(dao)電(dian)(dian)鰩(yao)(yao)身上，或(huo)者(zhe)讓病人去碰一(yi)下正(zheng)在池中放電(dian)(dian)的(de)電(dian)(dian)鰩(yao)(yao)，利用電(dian)(dian)鰩(yao)(yao)放電(dian)(dian)來治(zhi)療風濕癥和(he)癲狂癥等病。就是(shi)到(dao)了今天，在法(fa)國和(he)意大利沿海，還(huan)可能看到(dao)一(yi)些患有風濕病的(de)老年人，正(zheng)在退(tui)潮后(hou)的(de)海灘上尋找電(dian)(dian)鰩(yao)(yao)，當做(zuo)自己的(de)“醫生”呢。
放電原因
1989年，在法(fa)國科(ke)學城舉(ju)辦了一次饒有(you)(you)趣味的(de)“時鐘”回顧展(zhan)覽，一座用帶電(dian)(dian)(dian)(dian)魚(yu)放出(chu)的(de)電(dian)(dian)(dian)(dian)來驅動的(de)時鐘，引(yin)起了人們極大的(de)興趣。這種(zhong)帶電(dian)(dian)(dian)(dian)魚(yu)放電(dian)(dian)(dian)(dian)十分有(you)(you)規律，電(dian)(dian)(dian)(dian)流的(de)方向(xiang)一分鐘變換一次，因(yin)而被人稱為“天然報時鐘”。常見的(de)帶電(dian)(dian)(dian)(dian)魚(yu)有(you)(you)電(dian)(dian)(dian)(dian)鰻、電(dian)(dian)(dian)(dian)鰩(yao)(yao)、電(dian)(dian)(dian)(dian)鯰(nian)等(deng)。其中(zhong)電(dian)(dian)(dian)(dian)鰩(yao)(yao)電(dian)(dian)(dian)(dian)力(li)第(di)二強了。 它放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓可達(da)300～500伏，足(zu)(zu)以把附近的(de)魚(yu)電(dian)(dian)(dian)(dian)死，人和牲畜碰上，全身也(ye)會麻(ma)痹。據計算(suan)，1萬條電(dian)(dian)(dian)(dian)鰩(yao)(yao)的(de)電(dian)(dian)(dian)(dian)能聚集在一起，足(zu)(zu)夠使1列電(dian)(dian)(dian)(dian)力(li)機車運行幾(ji)分鐘。
放電原理
原來(lai)(lai)，電(dian)(dian)(dian)(dian)鰩(yao)是(shi)活(huo)的(de)(de)(de)(de)“發(fa)電(dian)(dian)(dian)(dian)機”。它尾(wei)部(bu)(bu)兩側(ce)的(de)(de)(de)(de)肌肉，是(shi)由有(you)規則(ze)地(di)排列(lie)著的(de)(de)(de)(de)6000～10000枚肌肉薄片組成，薄片之間有(you)結(jie)締(di)組織(zhi)相(xiang)隔，并有(you)許多(duo)神(shen)經(jing)直(zhi)通中(zhong)樞神(shen)經(jing)系(xi)統。每枚肌肉薄片像(xiang)一(yi)(yi)(yi)個(ge)小電(dian)(dian)(dian)(dian)池，只能產生(sheng)150毫(hao)伏(fu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓，但近(jin)萬(wan)個(ge)“小電(dian)(dian)(dian)(dian)池”串(chuan)聯(lian)起來(lai)(lai)，就(jiu)可以產生(sheng)很高的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)壓。電(dian)(dian)(dian)(dian)鰩(yao)尾(wei)部(bu)(bu)發(fa)出的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流，流向(xiang)頭部(bu)(bu)的(de)(de)(de)(de)感受(shou)器(qi)，因此在(zai)它身體(ti)周(zhou)圍形成一(yi)(yi)(yi)個(ge)弱(ruo)電(dian)(dian)(dian)(dian)場。電(dian)(dian)(dian)(dian)鰻中(zhong)樞神(shen)經(jing)系(xi)統中(zhong)有(you)專門的(de)(de)(de)(de)細胞來(lai)(lai)監視(shi)電(dian)(dian)(dian)(dian)感受(shou)器(qi)的(de)(de)(de)(de)活(huo)動，并能根(gen)據監視(shi)分析的(de)(de)(de)(de)結(jie)果(guo)指揮電(dian)(dian)(dian)(dian)鰻的(de)(de)(de)(de)行(xing)為(wei)，決定采取捕食(shi)行(xing)為(wei)或避(bi)讓行(xing)為(wei)或其(qi)它行(xing)為(wei)。有(you)人(ren)做(zuo)過這么一(yi)(yi)(yi)個(ge)實驗：在(zai)水(shui)池中(zhong)放(fang)置(zhi)兩根(gen)垂直(zhi)的(de)(de)(de)(de)導(dao)線(xian)，放(fang)入電(dian)(dian)(dian)(dian)鰩(yao)，并將水(shui)池放(fang)在(zai)黑暗的(de)(de)(de)(de)環(huan)境里，結(jie)果(guo)發(fa)現電(dian)(dian)(dian)(dian)鰻總在(zai)導(dao)線(xian)中(zhong)間穿(chuan)梭，一(yi)(yi)(yi)點兒也不會(hui)碰導(dao)線(xian)；當導(dao)線(xian)通電(dian)(dian)(dian)(dian)后(hou)，電(dian)(dian)(dian)(dian)鰩(yao)一(yi)(yi)(yi)下子就(jiu)往后(hou)跑了。這說明電(dian)(dian)(dian)(dian)鰻是(shi)靠“電(dian)(dian)(dian)(dian)感”來(lai)(lai)判斷(duan)周(zhou)圍環(huan)境的(de)(de)(de)(de)。
電(dian)(dian)鰩放(fang)完體內蓄存(cun)的電(dian)(dian)能后，要經過一段時間(jian)的積(ji)聚，才能繼續放(fang)電(dian)(dian)。
世界上已知的(de)(de)發電魚類(lei)達數十種呢，其他會(hui)放電的(de)(de)魚類(lei)還有電鯰、電鰻等。
吸(xi)力超強電(dian)鰩(yao)這個新品種是已知最(zui)大的(de)電(dian)鰩(yao)家(jia)族(zu)單鰭電(dian)鰩(yao)科的(de)成員(yuan)，它(ta)之(zhi)所以能(neng)進(jin)入年度十大發(fa)現(xian)新物種排(pai)名(ming)榜中，是因為它(ta)的(de)屬名(ming)非常與眾(zhong)不(bu)同且很有趣。科學家(jia)拍攝的(de)電(dian)鰩(yao)覓(mi)食錄像中顯示，這種魚可(ke)在(zai)水中像吸(xi)塵(chen)(chen)器(qi)一樣捕食獵物，或許能(neng)跟用來吸(xi)取地毯、家(jia)具和(he)其他容易落灰(hui)塵(chen)(chen)的(de)現(xian)代家(jia)居用品表(biao)面(mian)的(de)雜物的(de)電(dian)動吸(xi)塵(chen)(chen)器(qi)相(xiang)媲(pi)美(mei)。因此科學家(jia)按照伊萊克斯(si)(electrolux)真空吸(xi)塵(chen)(chen)器(qi)的(de)名(ming)字(zi)給它(ta)命名(ming)。
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