选择活泼好动、没有受伤的鱼。要选购动作活泼且有精神的鱼，不要选躲在角落里的鱼。要查看鱼体有没有受伤，尤其要查看尾鳍和脊椎是否破损，如果只是鱼鳍尖端轻微的伤则无关系。

对鱼的健康。游姿，动作、色彩、斑纹等，如何辨别好坏，对养鱼初入门者往往较为困难。一般选鱼时要注意以下几方面：①瘦的鱼不要买，因为从fish正面我们就可以清楚地看到背部的肉是否缺乏健康光泽，通常我们要选择健康活泼背部有光泽的fish②生病的fish不要买，如白点病可以看出来，其它病肉眼很难看出来，这就只有通过养fish经验作辨别，如象fish躲在角落里急促呼吸，就很有可能是患上了卵圆鞭毛虫病，这样的fish就不要购买③fish体颜色不好，Fish鳍无法展开，游姿象是在漂浮’s fish，也不要购买④先观察Fish吃饵的情形，然后才购买，如同类Fish中，看到有饵就扑过来的Fish，是食欲良好的，一定是健康生命力强的大。

不应该购体形太大或太小的大fisht Body shape too large or too small's Fish, body shape too big's Fish often not easily adapt to new environment changes, commonly not keen on eating like bait unsuccessful will die. Body shape too small's Fish, body quality weak easy disease death.

No abnormal situations' Fish cannot be purchased such as: Unnatural swimming posture. Staying in an unnatural place. Hurriedly swimming around. Floating on the water surface with mouth opening and closing for breathing. Leaving group alone by side. Moving slowly lagging behind the group. Back and belly are emaciated Belly is abnormally swollen Breath hurriedly.

For beginners to raise fish should choose easily raised marine fish, do not choose difficult raised fish~ Generally easier to raise include: Person Butterfly Black Spider Web Butterfly San Yuan Shark Red Clown Sun Butterfly Red Lightning Three Interval Sparrow Big Spot Horsefly Strawberry Knife etc., more difficult to raise include Four Interval Rocket Winter Melon Butterfly Yellow Bride Yellow Belly Black Back Bride Blue Line Butterfly Four Pointed Butterfly Horse Saddle Immortal Golden Butterfly Eight Line Butterfly Stone Beauty Emperor Immortal etc..