Table 1.

Physiological values for a hypothetical 1 kg test-fish as hemoglobin (Hb) is removed and icefish characteristics introduced.

Condition imposed on the test-fish	O2 solubility in blood [mg/mL]*	Cardiac output (Q) [mL/h]	Cutaneous respiration [mg O2/h]	Maximum O2 delivery [mg/h]
Normal	0.08540	3,90064	—	330
−Hb	0.009540	3,90064	—	37
−Hb, ↑Q	0.009540	7,14048	—	68
−Hb, ↑Q, +C. Resp.	0.009540	7,14048	1041	78
		N. coriiceps resting VO2 = 42 mg O2/h45,46
		C. aceratus resting VO2 = 32 mg O2/h44–46

^*Measured at 0°C and 101.3 kPa.