snout length
Distance between the tip of the upper jaw and anterior margin of the orbit.
Used in 30 profiles
Results for “snout length”
Ichthyological terms, not general ones.
standard length
Measurement taken from the tip of the snout to the midlateral, posterior edge of the hypural plate or posterior edge of the last vertebra, thus excluding the caudal fin. May also exclude the length of the lower jaw should it project beyond the snout. It is the standard scientific measurement used for most fish species because the caudal fin easily becomes damaged in preserved specimens. Abbreviated to SL.
Used in 48 profiles
gape length
Straight-line measurement from the snout tip to the angle of the mouth.
total length
Straight line measurement of specimen's length taken from the tip of the snout to the tip of the longer lobe of the caudal fin, if applicable, and not taking the curve of the body into account. If the caudal lobes are of equal length they may be compressed along the midline before the measurement is taken. Abbreviated to TL.
Used in 6 profiles
fork length
Length of a fish specimen measured from the tip of the snout to the end of the medial caudal fin rays, i.e., the deepest point of the 'fork' formed by the fin. Tends not to be used in systematics.