How much oxygen is consumed by fish species

This is not generally realized but is vital when designing aeration systems for growing on warm water species. Most research indicates that trout consume around 200 – 250 mg O2/kg/hour. I regularly record carp consuming three times as much at 700- 800 mg/kg/hour under optimal growing conditions.

Explanation:

adult fish usually are between 200 and 500 mg oxygen

the sphincter muscles at the end of the digestive tract is the anus.