å¨æ°´ä¸ç¬è¡çåèèä¸æ ·ççç©æ¯æ°´é»¾ã
æ¯åç¿ ç®ï¼é»¾è½ç§æè«ãå¦åAquarlus elongatusï¼æ æ¯äºéæ°´é¢æ溪æµç¼æµæ°´é¢ä¸ã身ä½ç»é¿ï¼é常轻çï¼åèçï¼å¯ä»¥ç¨æ¥ææçç©ï¼ä¸èååèå¾ç»é¿ï¼é¿çå ·æ油质çç»æ¯ï¼å ·æé²æ°´ä½ç¨ãä½è²é»è¤è²ï¼ä½é¿çº¦22mmãä¹è½å¤å¨éå°ä¸çæ´»ä¸æ®µæ¶é´ã