Ichthyological terms, not general ones.
Median, rayed, unpaired fin located on the dorsal surface (back) of most fishes. Its main purpose is to prevent the animal rolling and enable it to turn sharply. Some species possess more than one dorsal fin, in which case the anterior one is referred to as the first.
Used in 860 profiles
Unpaired, median fin, i.e., dorsal, caudal, adipose and anal fins.
Used in 1 profile
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
The dorsal, caudal, anal and, if present, adipose fins.
Used in 61 profiles
The distance between the dorsal fin insertion/origin and caudal fin base.
Used in 2 profiles
The typically narrow section of the body located between the posterior of the dorsal and anal fins and caudal fin origin. Its depth is measured vertically at the narrowest point.
Used in 394 profiles
A small, fleshy, rayless fin present in certain fishes and located behind the dorsal fin.
Used in 100 profiles
In species possessing more than a single dorsal fin, the space between the first and second fins.
In fishes, the part of the dorsal surface between the posterior edge of the skull and dorsal fin insertion.
Used in 37 profiles
The vertical distance between the dorsal and ventral margins of the body measured at the base of the pectoral fin where it joins the body. In most icthyological works the greatest dimension, normally anterior to the dorsal fin, is taken but in some cases body depth is measured at the origin of pectoral, pelvic and first anal. Fins or fin bases are not included in the measurement, however.
Used in 85 profiles
Any of the scales lying on the dorsal midline between the back of the skull and insertion/origin of the dorsal fin.
Used in 101 profiles
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
Located posterior to the dorsal fin.
Used in 23 profiles
Area or region anterior to the first dorsal fin.
Used in 75 profiles
Distance between the tip of the upper jaw and inseryion/origin of first dorsal fin..
Used in 19 profiles
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
Variably-sized (depending on species), usually dark marking present in the cleithral area dorsal to the pectoral fin insertion. Normally visible externally in llive specimens.
Used in 17 profiles
Section of the caudal fin located between the base and dorsal margin.
Major bone of the pectoral girdle. Extends upward from the pectoral fin base and forms the rear margin of the branchial cavity. Articulates with the supracleithrum dorsally, the scapula and coracoid ventrally. Also known as proscapulum.
Used in 4 profiles