Gravid: A pregnant female livebearer or female who is ready to lay eggs.
Grazer: A predator that consumes organisms far smaller than itself (e.g., copepods graze on diatoms).
Gravid Spot - Dark marking which can often be distinguished at the rear of the abdomen of female Livebearers (Platys in particular) indicating advanced pregnancy.
Gravid spot
A dark but transparent area under the base of the penduncle which female guppies possess; visible in very young female fry.
H ...
Gravid female .
In the meantime the common BNs were mating regularly throughout, which meant lots of young BNs around so water changes were almost every day a bucket or two.
Gravid females are best removed to a separate tank to give birth. Fry can be easily raised on crushed flake and small live foods.
Several hybrids and colour forms exist. The addition of salt to the tank is not necessary.
Gravid A pregnant female livebearer or female who is ready to lay eggs.
Encyclopedia 1.0 by Rebecca Smallwood
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This is a very gravid female. The diamond pattern on her sides is not always apparent.
This is a younger male, notice his color is not as fully developed as the top one.
Females may become gravid but no reports of successful breeding has ever been reported.
Also commonly traded as Checkerboard Sand Loach (as is N. Pallidus.) ...
Breeding is preceded by short-term pair formation with display by the male of his dorsal and ventral crests while he circles a gravid (egg-bearing) female.
On > two occasions > I´ve been able to remove gravid Neons to a separate dim-lit > breeding tank > where they spawned. > A. agassizii bred in a 55 gl.
I figured they may be gravid since the males were a bit more aggressive in chasing them. I moved a male and the most gravid female to a 5-gallon tank with water from the original tank and a sponge filter.
The older female was quite gravid and there was a marked increase in activity over the final few days. The spawn was infertile, but that was not surprising either. It was their first spawn and I actually half expected it.
Ensure there are more females to males and remove gravid females before they get too fat, as the males will continue to stress them out. Males can be sexed by the bright colours and gonopodium which appears to be too large for the fish.
Guppies and some platys have gravid spots at the bottom of their abdomen. This is a dark spot that generally means fry are present. The black spot is the dark eyes of the babies which show through the skin of the female.
0 mm SL for gravid females, and the lightest weight vertebrate, Schindleria praematura (Schindler, 1930), with a maximum weight of 8 mg (Bruun, 1940), belong to the suborder.
He does not single out a female and rough her up, but waits until a female becomes gravid with eggs and willingly follows him to the pit.
A male will become quite excited and demand the attention of a gravid female. Courting rituals are spontaneous and exciting. Tropheus are maternal mouthbrooders. Broods are not large, but the fry are big once the female releases them.
Females will show a bulging stomach and a dark gravid spot near the anal fin. Females will not eat their newborn, but others will. Floating plants, such as Crystalwort, will give the young places to hide.
Today we plan to look for Xiphophorus cortezi (later, when checking, we found with only ONE male but quite a few gravid females). Now we're facing the Pago Pago falls where,
Pago Pago Falls: the environment ...
Males normally display stronger coloration and females may appear more rounded when gravid. Coloration is extremely variable and changes with mood, though typically the fins are blue and dark vertical bands are apparent on the flanks.
When the female guppy becomes fertilized, a dark area near the anus, known as the gravid spot, will enlarge and darken. Guppies prefer water temperatures of about 22 °C (72 °F) for reproduction.
Occasionally males may hassle gravid females in bare tank with no hiding places.
SC: See H. ocellifer.
FOOD: Flake; live; insect larvae, Brine Shrimp, Tubifex, small aquatic insects.
You are probably asking, how can I tell when the female is pregnant? When a female guppy is pregnant she will develop a dark triangular shaped gravid spot near her anal vent. This will get larger and darker as the pregnancy progresses.
Light colored livebearers develop an obvious darkening of the skin, called a "gravid spot," right at the anal area. The spot enlarges and grows darker as the pregnancy progresses. It's like a window to the little babies inside.
It is important that all parameters--hardness, pH, nitrite and nitrate levels--be the same, or very close. And, of course, it is important to handle a gravid female carefully.
Candling (hold bright light behind fish) is an option to see if any eggs are being held. Breeding has not yet been recorded in the aquarium with any regularity. Females may become gravid but have the ability to reabsorb eggs.
Female Gray Angels usually select a male, once they are gravid. The pair swims to the surface of the water and each Angel releases eggs or sperm, which combine in the water. In the wild, the tiny Angels develop in floating beds of plankton.
 See also: Fish, Aquarium, Species, Water, Plants
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