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In actinopterygians, the pelvic fin consists of two endochondrally-derived bony girdles attached to bony radials. Dermal fin rays (lepidotrichia) are positioned distally from the radials. There are three pairs of muscles each on the dorsal and ventral side of the pelvic fin girdle that abduct and adduct the fin from the body. [citation needed]
Polynemus multifilis is a medium-sized species of threadfin which attains a maximum standard length of 28 centimetres (11 in). [2] It has a pointed snout and the dorsal profile of the head is almost straight, There are two separate dorsal fins, the first dorsal fin contains 8 spines which are all of a similar thickness at their bases and the second dorsal fin has a single spine and 14-16 soft ...
The snout is semi-transparent. The first and second dorsal fins, as well as the caudal fin, are pale with blackish rear margins. The membrane of the pectoral fin is blackish. The pectoral filaments are white. The forward margins and origins of the pelvic and anal fins are white, while their other parts are a dusky yellowish white.
A striking and easily recognised fungus, Plums and Custard takes its common name from its plum-red scaled cap and crowded custard yellow gills. The flesh is cream-coloured and spore print creamy white. The base colour of the cap under the purplish scales is yellow. [1] Cap: convex becoming bell-shaped then flattening with age.
Cyclopterus is a compound of cyclos, meaning 'ring', with pteros, which means 'fin'. This is a reference to the pelvic fins being modified into a suction disc. The specific name lumpus is derived from the Anglo-Saxon lump and the fish was called Lumpus anglorum by Gessner in 1558. This seems to refer to the dorsal fin being embedded in the ...
A small fin, positioned behind the dorsal or anal fins, that is supported by a ray or rays. fluviatile Living in rivers. free rear tips (of fins) The posterior tip of the fin that is closest to the most posterior point of the fin base. frontal ridge A ridge running along the top of the head along the midline. furcate Forked. fusiform
The stipe is white in colour, smooth, [17] 3–7 cm (1–3 in) long by 2–3 cm (1–1 in) thick and is cylindrical, sometimes tapering towards the base. [11] There is a thick layer of firm white flesh, and the decurrent gills are particularly crowded and narrow, sharing the white colouration of the stem but becoming creamy with age.
Gobiidae or gobies is a family of bony fish in the order Gobiiformes, one of the largest fish families comprising more than 2,000 species in more than 200 genera. [1] Most of gobiid fish are relatively small, typically less than 10 cm (3.9 in) in length, and the family includes some of the smallest vertebrates in the world, such as Trimmatom nanus and Pandaka pygmaea, Trimmatom nanus are under ...