Papillae: A soft projection.
Parapatric Speciation: The differentiation into distinct species of populations experiencing some gene flow.
Parasite: An organism living on or in, and negatively affecting, another organism.
Papilla - A tube descending from the abdomen of male fish used to fertilize eggs. It is typically only visible during breeding. See Milt.
· Papilla (pl. papillae) = fleshy projection on ♀ animals behind the anus:
· Patho - = Gk for "suffer". Used as a prefix refers to disease conditions (pathology, pathogen) ...
Crimora papillata
Sea slugs are simultaneous hermaphrodites, which means that they possess both male and female sex organs at the same time, though auto-fecundation is rare.
The genital papilla of these fish is pointed in males, and rounded in females.
Breeding: ...
The genital papilla of males tends to be larger and more well developed.
Habitat Information
Distribution ...
One sure sign that spawning is about to occur is the appearance of the pair's genital papillae. These look like little nipple-like projections and are called ovipositors (oh vi poz' uh turs), a word that literally means "egg-placer(s)".
The male also has a pointed genital papilla, while females have a rounded genital papilla
B: Use warmer water with a temperature from 77-82°F (25-28°C). Usually 600-700 amber-colored eggs, although as many as 7500, are laid on a vertical surface (i.
However, one great thing about julies is that the males have really prominent genital papillae. You can sometimes even see the papilla when the fish swims in front of a contrasting background. J.
Difficult to sex except when spawning; the male genital papilla (breeding tube) is more slender than the female. Otherwise, the more aggressive behaviour of males will usually be suggestive.
The male has a somewhat ridged genital papillae on which the spermatoduct is on the back side, facing the tail fin.
Within a few days the papilla should show on both the male and female (organ between the ventral and anal fin). The male's papilla is much smaller than the female's. Once egg laying begins you should avoid disturbing the tank.
Positive identification can only be made after close examination of the genital papillae. The males normally have pointed fins and reddish-brown spots and "worm-like" markings on their heads. Females usually have a dark patch on the dorsal fin.
The females are less brightly colored than the males and have a blunt genital papilla. The male also has sharply pointed dorsal and anal fins. Firemouth Cichlids make excellent parents, and both the male and female share in the rearing of the fry.
A small white genital papilla will also be present. This coloration can be seen before the actual spawning. During spawning the female's color is more red brownish without any bars on the flank but with bright greenish scales here and there.
It is difficult to distinguish sexes except by their genital papillae. The spot near the dorsal and anal fins is less noticable on females. When breeding, the fish will dig spawning areas near the back of the aquarium.
Males have a noticeable genital papilla, and in this species, it is the female which tends to be larger in an established pair.
Breeding
Cave spawner, use smooth rocks or plant pots for the spawning cave. The eggs and fry are guarded by the parents.
Sexual Differences: The Marlier's Julie female has a longer genital papillae that is flatter on the end. The male's genital papillae is shorter, more pointed, and angled toward the back.
Some other traits of this family include a mouth on the underside (which may or may not have conspicuous barbels) and a ventrally flattened body, papillae (small projections) on the ventral (lower) lip, ...
hilla has a long, gray to chestnut-brown body with white spots and numerous spiny papillae. It is cylindrical in shape and has blunt ends. It can grow up to 6 feet in length, so it is almost always too large for a home aquarium.
Scarcely aquaristically known catfish from southeastern Asia, superficially showing similarities to the South American Aspredinidae. A peaceful, rather lethargic fish. Male with genital papilla.
Akysis maculipinnis
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Their bodies are covered with bony plates, hence the name "armored catfish". The mouths of loricariids are located ventrally (on the bottom), with sensory papillae on the ventral lip.
 See also: Fish, Species, Water, Aquarium, Spawn
  
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