Search results
Results From The WOW.Com Content Network
The cleithral spine is short and is located over the pectoral fin and extends just to the first quarter of the pectoral fin. [8] The lower three rays of the pectoral fins have developed into separate, finger-like processes that are packed with sensory organs with which the gurnard seems to "walk" while detecting prey in the sediment.
In many fish, the pectoral fins aid in walking, especially in the lobe-like fins of some anglerfish and in the mudskipper (see also walking fish) Certain rays of the pectoral fins may be adapted into finger-like projections, such as in sea robins and flying gurnards; In skates and rays, the pectoral fins are used for propulsion (rajiform ...
Pelvic fins or ventral fins are paired fins located on the ventral (belly) surface of fish, and are the lower of the only two sets of paired fins (the other being the laterally positioned pectoral fins). The pelvic fins are homologous to the hindlimbs of tetrapods, [1] which evolved from lobe-finned fish during the Middle Devonian.
There are two separate dorsal fins, the first has 10 spines and the second has 12 soft rays. The anal fin contains 10 soft rays. The pectoral fin has a rounded posterior margin and has 13-14 rays within its membrane, and the fin extends almost as far as the rear of the base of the anal fin. There are 3 enlarged rays at the bottom of fin which ...
The small, slender pelvic fins are located underneath the throat and possess a single spine; the large anal fin may have one or two spines. The pectoral fins are greatly enlarged, and the tail fin is rounded. The New Zealand topknot, Notoclinus fenestratus, is the largest species at 20 cm in total length; most other species do not exceed 6 cm.
The pectoral fin is situated far below the midline of body. There are 5 pectoral filaments, the first being the shortest and this filament just reaches to or extends beyond the start of the anal fin. The remaining pectoral filaments reach well past the ends of lobes of the caudal fins with the third filament being the longest being 2.5-3 times ...
The pectoral fins and tail fin are greyish while the other fins are colourless. Juvenile fish are sometimes barred with black. [3] This species can be distinguished from the oceanic two-wing flyingfish (Exocoetus obtusirostris) by having a less blunt snout and by the origin of the anal fin being at a location behind the origin of the dorsal fin ...
The dorsal fin has fewer or equal (rarely one more) rays than the anal fin; the dorsal fin is low, with the anterior rays the longest, the pectoral fins are strikingly long, reaching to or almost to caudal fin base; pelvic fins are long, reaching beyond the anal fin origin, and their insertion is closer to the anal fin origin than to the ...