过背金总是呆在缸底

有一条过背金总是躲在缸底的一个角落，而且尾鳍骨掉了一根。

请教大家，这是出了什么问题吗？为什么它总是沉底？需要怎么处理呢？另外，龙鱼常用的消炎药有哪些？一般的用量是多少呢？

先谢谢大家了！

鱼现在还好吗

状态很差了 建议换进去4分之一高于鱼缸温度1-2度的纯净水 速度要慢 控制在1小时左右    然后下进去千分之三的盐  爆氧 观察1天在说

休息

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关灯一个月别打扰它，保持好水质

体弱，胆小，环境不适应。水质要注意，另外缸底下那，白色的是鱼便的话不排除还有肠炎的可能。平时喂得啥呀？

勤换水。

还是水质的问题

状态太紧张了

龙鱼没力气，八成是喂食没做好杀菌措施导致肠胃寄生虫病，甚至也有可能是喂虾之前没有除掉虾剑虾尾刺，穿破了肠胃。如果还有食欲，你不妨可以试试买一罐英国大白片，一片融进冷开水里用注射器打进大麦虫身体里让鱼吃下去，兴许还有救

签到。。。。。