epaxial
Above, or on the dorsal side of, the axis of the skeleton.
Used in 1 profile
Results for “dorsal”
Ichthyological terms, not general ones.
epaxial lobe
Section of the caudal fin located between the base and dorsal margin.
epibranchial organ
Present in some microphagous fishes and comprises a paired dorsal diverticulum located towards the posterior of the pharynx. In the majority of species it's divided into two sections by additional gill rakers which trap small food particles.
epural
Located on the dorsal side of the caudal fin; elongate bone which supports the caudal fin rays, positioned above the urostyle and posterior to the last neural spine.
Used in 8 profiles
neural arch
A bony or cartilaginous arch-shaped structure arising from the dorsal side of a vertebra and enclosing the spinal cord.
Used in 2 profiles
notal
Of or relating to the back; dorsal.
parhypural
The most posterior hemal arch with an open canal through which the dorsal aorta passes.
principle caudal-fin rays
Fin rays forming the dorsal or ventral margins of the caudal fin, supported by the supported by the hypural and parahypural.
Used in 1 profile
rostral spine
Median dorsal structure located on the snout in certain fishes.
saddle
Blotch-like marking extending over the dorsal surface in certain fishes. Highly variable in number and form depending on taxon, and often used as an identifying feature.
Used in 49 profiles
transverse scale row
Number of scales in the diagonal row between the orgins of dorsal and anal fins in a fish specimen, excluding the lateral line scales.
Used in 10 profiles
unpaired fins
The dorsal, caudal, anal and, if present, adipose fins.
Used in 61 profiles
vertical fin
Unpaired, median fin, i.e., dorsal, caudal, adipose and anal fins.
Used in 1 profile