No. Trout do not stand upright.
no
Erect is defined as:Raise: construct, build, or erect; "Raise a barn"Upright in position or posture; "an erect stature"; erect flower stalks; for a dog, an erect tail indicates aggressionRear: cause to rise upTumid: of sexual organs; stiff and rigid- wordnetweb.princeton.edu
upright posture...large brains
Meaning, erect human. (Standing up/walking).
Keeps up your posture, allows you to move lower than the pelvis, and protects major connections from the brain to the rest of the body which are the messages to move.
Erector Spinae. These muscles extend the spine and maintain the vertebral column in an erect posture.
Neanderthals are depicted with a stooped or slouched posture based on their skeletal remains. This posture has been attributed to a combination of their physical build, lifestyle, and environment, but may not accurately reflect their actual posture when they were alive.
Many people slouch when they stand, but it is better posture to stand erect.
No
The strengthening of the SPINE makes it straight so that the toddler's posture is more upright.
Bipedal locomotion, Upright posture
Swayback -- aka swayback posture -- is one of several types of posture ... Also, maintaining a strong core is vital to a healthy upright posture.