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查体表病鱼体表充血、发炎、鳞片脱落,一般是赤皮病;若病鱼鳃盖或鳍基部充血,表皮充血不明显,肌肉呈点状充血或块状淤血是出血病;病鱼腹部膨大,肛门红肿呈紫红色,轻压腹部有乳黄色液体流出是肠炎病;尾柄及腹部两侧有火烙样的红斑或表
Check body surface disease fish body congestion, inflammation, scale loss, usually red-skin disease; if the fish gill cover or fin base congestion, epidermal congestion is not obvious, muscle punctate congestion or massive congestion is bleeding; diseased fish Abdominal swelling, anal swelling was purple, light pressure abdomen creamy liquid out of enteritis is disease; caudal peduncle and abdomen with fire-branded erythema or both sides of the table