Rainbow Darter in Respirometry Chamber (image) Society for Experimental Biology Share Print E-Mail Caption Measuring the metabolism of a rainbow darter in a respirometry chamber. Credit Mr Hossein Mehdi Usage Restrictions Image only to be used with credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.