观赏鱼与其他生物一样在其生长发育过程中难免患有各种的疾病，若预防不当会使其失去原有的色彩，影响其观赏价值和正常生长发育，严重的更会导致死亡，给养殖者带来损失，所以要养好观赏鱼，就必须了解其发病原因，掌握鱼病的预防措施。１发病原因１．１水质较差首先养殖用水? Ornamental fish, like other organisms in the process of its growth and development will inevitably suffer from a variety of diseases, if not properly protected will make it lose its original color, affect its ornamental value and normal growth and development, even more serious will lead to death, to farmers Bring losses, so to keep good ornamental fish, we must understand its causes, to master the prevention of fish diseases. 1 causes 1.1 poor water quality First of all, water for breeding?