Posterior - At or toward the hind or tail end of the body.
Predaceous - Feeding or preying on other animals.
Proboscis - A tubular structure protruding from the head.
Posterior
behind.
Premaxillary
either of the paired bones at the front of the upper jaw.
Posterior: In the direction away from the head; opposite of anterior.
Potable Water Supply: A source of water that can be used for human consumption.
[edit] Posterior
This is the end of the fish including the caudal and anal fins.
[edit] Ventral ...
· Posterior = the hind, the rear
· Potamodromous = Gk word that indicates species migrating upstream for spawning purposes as the trouts ...
commbrae: moderately deep body; narrow lateral band ends just in front of caudal patch (Bar 7); 2-4 usually highly visible abdominal stripes; banded caudal fin (at least the posterior end, but commonly over the entire tail).
Mature Males are brightly colored with a deep blue body, Long dorsal fin with white margins, Caudal fin has a black band on the posterior half .
There is also an ocelli on the posterior portion of the dorsal fin. Although it was once thought that there were two distinct species in this genus, only C. altivelis is currently recognized as valid.
The posterior half of the body is overlaid with a large, roughly triangular black marking, that tapers toward the terminal end of the caudal peduncle, and begins approximately below the midpoint of the attachment of the dorsal fin.
The anterior half of the adult male is of a dusky orange shade, and this colour will gradually turn into blue or green towards the posterior. The back usually sports a metallic green colour.
Sexual dimorphism is rather limited with males larger in size and showing longer extensions on both the caudal and the posterior of the dorsal fins; these characteristics are more reliable in mature fish.
As far as sexing goes, the males are usually more colorful and possess a filament-like extension of the posterior part of the dorsal fin. Both sexes are identical when juvenile, though at about 7 cm the dimorphism becomes apparent. T.
Distinguished from congeners in having a combination of the following characters: lack of elongate, symphyseal teeth on the dentary, a reduced lateral line extending posteriorly onto at least the caudal peduncle, presence of teeth on vomer, ...
Males have a beautiful bluish purple head that fades into a gorgeous orange and yellow posterior. Though females are not as colorful, their brilliant silver coloration is equally as stunning against any backdrop of plants or rockwork.
Males have their genital openings behind/under their posterior pair of legs. Females have their genital openings under the third pair of legs counted from the posterior.
A pregnant female can be identified by the gravid spot (darkened area) behind her anal fin just posterior to the belly. When viewed from above, her strides appear swollen.
A popular fish because of the color of the males, which are blue/purple with orange and yellow on the posterior of the body, the Boesemani Rainbow, or Boeseman's Rainbow is a good centerpiece for the aquarium.
They hold onto their hosts via a combination of hooks, anchors, and suckers at their posterior end (opisthaptor), and use the anterior end (prohaptor) for feeding and assisting in moving to other locations on the host.
You can distinguish Crenicichla tesay from its close relatives by the existence of a serrated posterior preopercle border, the number of scales on the E1 row, the length of the snout, and the colour pattern which consists of a suborbital stripe, ...
Sex differences: Males show characteristic gold anterior and purple posterior.Females are basically gray with black highlighting on the fins.
Towards the front (opposite of posterior)
Anthelmintic
A chemical which destroys or expels parasitic worms ...
Coloration/Fins:
This fish is greyish in color, fading from light at the nose to near black at the tail. Two prominent black vertical bars appear just posterior of the gills.
Habitat/Care/Maintenance:
The Essentials ...
So the front (Anterior) portion of such a fin is called the Spiney Dorsal and the rear (Posterior) portion is called the Soft Dorsal.
The sides of the male's body, the anal and caudal fins, and the posterior portion of the dorsal fin will become bright honey-yellow or reddish-orange.
Mike from Canada adds: "Yes, from each gill arch soft gill filaments radiate posteriorly and are used in breathing and osmoregulation and all that, but the anterior face of the gill arch has, to a varying extent, bony gill rakers.
Males are more slender than females, and exhibit a rounded extension at the bottom edge of the distinctive black wedge covering the posterior of the fish. The black wedge on females is perfectly straight.
 See also: Fish, Aquarium, Species, Water, Color
|
