想要跟牠比？只能叫你阿嬤來囉！美國加州科學院（California Academy of Sciences）的斯坦哈特水族館（Steinhart Aquarium）中，有一隻年齡高達90歲澳洲肺魚「瑪土撒拉（Methuselah）」。牠年紀奇高，是今年世界上現存最老的觀賞魚，可個性溫和可愛，還會靠向飼育員的手討摸。

據外媒報導，​​這隻90歲的澳洲肺魚「瑪土撒拉」，名字與《聖經》中享嵩壽969歲的最長壽者相同，牠全長1.2公尺、重達18.1公斤，目前研判為雌性。澳洲肺魚，又稱昆士蘭肺魚，一般只生活在澳大利亞昆士蘭州，為同時擁有肺和腮的原始物種，被科學家認定是魚類及兩棲動物進化過程中的重要角色。

瑪土撒拉性格相當溫順，當人類擺出食物，牠就會游至身旁覓食，也非常享受被抓搔背部的感覺，甚至會像狗狗一樣將頭靠在人類的手掌上撒嬌。生物學家艾倫（Allan Jan）表示：「瑪土撒拉性格溫和、文靜，像是隻水中的小狗狗，但若受到驚嚇，就會突然變得很有活力。」

The log-periodic antenna as known as LPDA is a wideband directional antenna that provides gain and directivity combined over a wide band of frequencies.
Both Log-Periodic Antennas and Yagi antennas are high gain directional antennas. The main difference between these antennas is that Log-Periodic Antennas support wider frequency bandwidths and are physically much larger than Yagi antennas.
The log-periodic dipole array typical VSWR is 2:1 and operates over a much wider bandwidth and will have a lower gain for an equivalent number of elements.
In terms of its specification, a typical log periodic antenna might provide between 3 and 6 dB gain over dipole for a bandwidth of 2:1 while retaining a VSWR level of better than 1.3:1. With this level of performance, it is ideal for many applications, although a log-periodic antenna will be much larger than a Yagi of an equivalent gain.

EMC/EMI pre-compliance test antenna.
Very high gain over the full frequency range.
 Meets latest EMC standards up to 7GHz.
Suitable even for immunity measurements

此外，也有另一條澳洲肺魚「爺爺（Granddad）」，在2017年時成為世界上最長壽的觀賞魚，最後以95歲高齡辭世於芝加哥謝德水族館（Shedd Aquarium）。（編輯：李惠婷）

更多 NOWnews 今日新聞 報導
翻車魚四處躺難生存？「成年體型」嚇翻網：幾乎沒天敵
小座頭鯨浮水面呼吸！母親關切伴隨 絕美悠遊畫面曝光
日本海生館發現「野生章魚硬闖」 網爆笑：不想努力了？