Extensor Foot Tendons. In the foot diagram below, the main tendons on the top of the foot are labeled. The group of tendons are called the extensor tendons and are responsible for elevating the toes and flexing the ankle up (dorsiflexion).
Dwarf puffers are quite hardy and will tolerate varying water conditions but obviously will do best, as with any fish, in optimum water conditions. They do best at temperatures of 80/26 degrees with a ph of at least 7.
Like all extant lamnids, the Porbeagle is warm-bodied, maintaining its internal temperature 12.5 to 18 degrees Fahrenheit (7 to 10 degrees Celsius) higher than the water temperature. It has been known to leap out of the water in pursuit of prey.