The good agreement we observed between our estimates of size at age 365 days based on otoliths and of size at age 1 yr based on fin rays
provides a strong partial verification of our aging protocols for young swordfish.
fulminantis appear to be sister-species, since males of both species share several color and morphological fin traits such as a hyaline pectoral fin in males, dorsal, anal and caudal fins with bright-colored stripes parallel to fin rays
, and the shape of dorsal and anal fins, elongated and pointed with short filaments (Costa 2006).
staecki in having a truncate caudal fin, but differs by a unique combination of character states: tip of pelvic fin reaching between base of 4th and 5th anal fin ray
in males, and 39-42 scales in longitudinal series.
octotaenia of the Red Sea, in having rounded dorsal, anal, and caudal fins, and lacking prolonged dorsal fin rays
7L comes from the middle part of the anal fin where there are the longest fin rays
Both dorsal fins have dull red and brown zig-zag stripes and flecks and, particularly in large adult males, the first three fin rays
of the first fin can be elongated and swept back in graceful curves.
And although no femur bone was found, pelvic fin material, including long fin rays
, indicated the hind fin was at least as long and as complex as its forefin.
Various structures have been used in osseochronometry of fishes, including scales, otoliths, fin rays
and spines, and opercular bones.
Many structures have been used to estimate the age of fishes, including scales, otoliths, vertebrae, fin rays
and spines, opercular bones, cleithra, urohyal bone, and hyomandibular bone.
3M-P) from between the bases of the 2nd dorsal and anal fin rays
(the 1st dorsal fin was not studied) cover the ovoidal distal radials (Hilton et al.
The zebrafish caudal fin is composed of numerous fin rays
Meristic counts included: trunk rings, tail rings, dorsal fin rays
, dorsal fin rings (subdorsal rings) over the trunk, subdorsal rings over the tail, and total dorsal fin rings.
00): (0) single long first ray connected to two proximal radials; (1) long fin ray
connected to two proximal radials, preceded by one or two short fin rays
Cave-adapted sculpin from Perry County, Missouri, have smaller eyes (1-6% SL), fewer pelvic fin rays
(3 + 3 or 3 + 4), enlarged cephalic canal pores, and reduced pigmentation (Burr et al.
Scientific description utilises two main numerical techniques; `meristics' to count the number of bones, cartilage and fin rays
in different parts of the fish, and `morphometrics' to measure the length of, or distance between physical features.