Poikilothermic fish have no control over their body temperature and their core body temperature can fluctuate broadly. While some ectothermic stenotherms thermoregulate their body temperature by inhabiting constant temperature environments, internal temperature of poikilotherms can widely vary. (fishionary.fisheries.org/poikilotherm)
Thoughout their lives, Steelhead’s internal temperature varies considerably (NPS).
0 Comments