in which the sperm of the fish is ejected. When ready for mating, the gonopodium becomes erect and points forward towards the female. The male shortly...

males, the anal fin is shaped into a grooved, rod-shaped organ called a gonopodium used to deliver sperm to females. In lizards and snakes, males possess...

male secretes milt into the genital aperture of the female through his gonopodium. Within 16 to 28 days after mating, the female gives birth to about 60...

being more pointed. The anal fin of the male fish has evolved into a gonopodium, a stick-shaped organ used for reproduction. The female southern platyfish's...

which allow internal fertilization. In ray finned fish they are called gonopodiums or andropodiums, and in cartilaginous fish they are called claspers....

testes), S: ventral fins, T: spine, U: anal fin, V: tail (caudal fin). Possible other parts not shown: barbels, adipose fin, external genitalia (gonopodium)...

possess a modified tubular anal fin called the gonopodium, located directly behind the ventral fin. The gonopodium has a channel-like structure through which...

from the Greek words ξίφος (dagger) and φόρος (bearer), referring to the gonopodium on the males. All are relatively small fishes, which reach a maximum length...

female Do not use claspers, though some species use their anal fins as gonopodium for the same purpose Mouth Large, crescent shaped on the ventral side...

edge, a stripe through the eye, and an oversized male copulatory organ (gonopodium). Phallichthys amates is the largest and most widespread species in the...

into a gonopodium which can be brought forward on one side only. Based on the bending to the left or to the right of the tip of the gonopodium, two morphs...

Neoheterandria elegans is a livebearer. The male uses his modified anal fin, or gonopodium, to deliver sperm to the female. The fertilized eggs grow within the female...

being more pointed. The anal fin of the male fish has evolved into a gonopodium, a stick-shaped organ used for reproduction. The female southern platyfish's...

third body segment behind the head, near the second pair of legs. Gonopod Gonopodium Nikita Kluge (2004). "Morphology of mayflies". The Phylogenetic System...

observed to forcefully copulate with females by trying to insert their gonopodium (male sex organ) into female's genital pores, whether or not they are...

anal fin. Males can be distinguished from females by the presence of a Gonopodium, a modified anal fin used to impregnate the female during breeding. A...

organ with the tip angled to one side. This structure, also called a gonopodium, is used in reproduction. Adult females have 11 anal fin rays, where rays...

turtle and mammal penises have a similar structure. In some fish, the gonopodium, andropodium, and claspers are intromittent organs (to introduce sperm...

Pacific drainages in Nicaragua, Costa Rica, and Panama. O. dovii has no gonopodium like the other members of its family. The dorsal and anal fins are posteriorly...

elements within the anal fin of males that form a structure known as the gonopodium. Sailfin mollies produce broods of 10–140 live young, depending on maturity...

anal rays which are greatly elongated and fused into a tube called a gonopodium associated with the sperm duct which he uses as an intromittent organ...

their anal fin. Like most poeciliids, male anal fins are modified into a gonopodium (intromittent organ) that is used to deliver sperm and impregnate females...

"penis" and ichthys meaning "fish", referring to the "comparatively huge" gonopodium, the modified anal fin used for copulation. The common name for P. amates...

and sailfin mollies). They are easy to sex as males have a prominent gonopodium, a modified anal fin used to inseminate females. They mature quickly and...

less than 64 of A. anableps). They also have a left or right-leaning gonopodium like other Anablepidae members and give live birth. "Anableps microlepis"...

organ, the gonopodium also known as an anal fin. The purpose of the gonopodium is to deliver the spermatophore. The male takes his gonopodium and forcefully...

anal rays which are greatly elongated and fused into a tube called a gonopodium associated with the sperm duct which he uses as an intromittent organ...

females can grow up to 34 cm (13.4 in) TL. The male also has a prominent gonopodium used to impregnate females during mating. As with other members of Anablepinae...

distinguished from G. affinis on the basis of its hooked third ray on the male gonopodium and by the seven or eight dorsal fin rays in G. holbrooki compared to...

internal fertilisation. The male is equipped with a gonopodium-like anal fin known as a gonopodium that delivers sperm into the female. The gestation period...