帝王(wang)(wang)魟(hong)(hong)(hong),學名門查江魟(hong)(hong)(hong)(Potamotrygon menchacai),又稱帝王(wang)(wang)老(lao)虎(hu),老(lao)虎(hu)魟(hong)(hong)(hong),為燕魟(hong)(hong)(hong)目,魟(hong)(hong)(hong)科,江魟(hong)(hong)(hong)屬一種淡(dan)水魚類。帝王(wang)(wang)魟(hong)(hong)(hong)分布于南(nan)美洲秘魯,外形奇特,色(se)彩美麗,可作為觀(guan)賞魚類。
2017年(nian),科學家發現了1萬8000種(zhong)新(xin)物種(zhong)。從這(zhe)些新(xin)物種(zhong)中(zhong)(zhong),美國(guo)國(guo)際(ji)物種(zhong)檢定研究所評(ping)選出了10大最奇特的新(xin)物種(zhong),帝王魟名列其中(zhong)(zhong)。
帝(di)王魟(hong)(hong)體(ti)呈(cheng)(cheng)圓片狀(zhuang),尾(wei)(wei)部呈(cheng)(cheng)鞭狀(zhuang)。帝(di)王魟(hong)(hong)在幼魚階段(duan),基(ji)底顏(yan)色(se)與(yu)虎(hu)(hu)斑狀(zhuang)花(hua)紋都(dou)比較淡,隨(sui)著(zhu)魚體(ti)的(de)(de)(de)(de)成長(chang)會(hui)(hui)逐漸發生顏(yan)色(se)的(de)(de)(de)(de)深淺(qian)變化(hua)。長(chang)大(da)成魚以后,絢爛奪目的(de)(de)(de)(de)表(biao)現讓人賞心(xin)悅目。這(zhe)種(zhong)(zhong)華麗(li)的(de)(de)(de)(de)大(da)型南(nan)美魟(hong)(hong)魚身上所(suo)擁有(you)(you)的(de)(de)(de)(de)金黃色(se)花(hua)紋獨(du)步(bu)所(suo)有(you)(you)的(de)(de)(de)(de)魟(hong)(hong)魚品種(zhong)(zhong),尾(wei)(wei)巴黑黃相間與(yu)腹部全白為(wei)其(qi)最(zui)大(da)特色(se)與(yu)賣點(dian),最(zui)大(da)體(ti)盤的(de)(de)(de)(de)直徑可達1500px,英文俗名(ming):tiger ray,直譯稱(cheng)為(wei)老虎(hu)(hu)魟(hong)(hong)。帝(di)王魟(hong)(hong)的(de)(de)(de)(de)尾(wei)(wei)柄(bing)上分(fen)布有(you)(you)盾鱗演化(hua)出(chu)的(de)(de)(de)(de)盾鱗丘,最(zui)長(chang)的(de)(de)(de)(de)一(yi)根特化(hua)為(wei)尾(wei)(wei)刺(ci),內(nei)有(you)(you)溝槽(cao),遇敵(di)時會(hui)(hui)以尾(wei)(wei)刺(ci)蟄刺(ci)敵(di)害,同時通過溝槽(cao)注射毒液,其(qi)毒液為(wei)劇毒,非常危險。
帝(di)王(wang)魟(hong)適(shi)宜酸性軟水,pH為5.8~6.5,水溫為24至29攝氏(shi)度,對硬度要求不高,dH5–10,稍(shao)高一點(dian)也沒有(you)關(guan)系。帝(di)王(wang)魟(hong)對水環境的(de)波(bo)動(dong)低(di)抗性較差,切忌(ji)突然變化溫度及大量換水。同時所有(you)的(de)魟(hong)魚(yu)類都不耐藥物,所以飼養中不要輕易下藥。