Gill Cover: A hard bony plate covering the gills, also known as an operculum or a gill plage.
Gill Netting: The process of catching fish by a net which catches the gills of the fish, trapping them inside.
Gill cover
the bones (or cartilage) of the head that cover the gills, "opercle" or operculum.
Gill rakers
anterior (front) knobby or comb-like projections from the gill arch.
Gill cover A hard bony plate covering the gills.
Top
H
Hard water Water with a high concentration of dissolved salts.
Gill Cover: A hard, bony plate which covers the gills.
Gonopodia: An modified anal fin which is elongated. Only appears on the males.
Gravid: A pregnant female livebearer or female who is ready to lay eggs.
Gill Cover A hard, bony plate which covers the gills.
Encyclopedia 1.0 by Rebecca Smallwood
Please visit these sponsors who make FishGeeks possible.
[edit] Gills and Gill Cover
This is of course the essential part of the fish, it is what makes it possible for them to breath. The gills on some fish are more prominent than others.
Behind the gill cover is an orange to red marking in reflected light. The iris is bright orange to red. A yellow stripe extends from the tail to the gill cover.
The body, from the gill cover to the stripes, including the forehead, is yellow. The fins, except for the pectoral, are yellow with the tail also having a marbling of blue. The pectoral fins are transparent.
The two species can be separated by color on the tail and gill cover. The Giant Krib will always show a turquoise stripe below the eye and on the gill cover.
Care and feeding: Since puffers do not have gill covers or scales, they are thought to be more susceptible to diseases, nitrite, nitrate and ammonia levels. Consequently they are not a good fish to cycle an aquarium with.
Assuming that desirable choices for first fish can be found, the beginner should carefully inspect the specimens for sunken bellies, sunken eyes, clamped fins, labored breathing (often with gill covers quite extended), ...
SYMPTOMS Usually found attached to gills, gill covers and inside the mouth. Heavy infestations with Ergasilus can cause severe gill damage, emaciation, anemia and even death.
Male Bettas flare their gill covers, called the opercula (sing. operculum), in response to certain situations.
Betta climacura is close in appearance to a shortened Betta pugnax, the males showing the green iridescence on the operculum (gill covering). The male is generally a little smaller. The difference is the lateral bands exhibited by these fish.
Although these encounters are usually limited to lateral displays, gill cover flaring and head shaking, if one individual does not back down they may bite each other.
Sexing can be difficult, but males display short spines on the gill covers which the females do not. Breeding has been obtained with moderate skill - but personally I have yet to attempt.
Respiration is carried out by means of gills located under the gill covers. The walls of the Pharynx is perforated by five slit-like openings.
Breeding A female Salvini Cichlid is usually distinguished by a dark spot located on her gill covers or a dark patch on her dorsal fin, while males normally have more pointed tips to their anal and dorsal fins and brighter coloration.
They posses red unpaired fins, a red patch on the gill covers, and unique black markings including a "collar" running from behind the gill covers up to the back just in front of the dorsal fin and a "mask" which runs up from the lower jaws to the ...
Though difficult to sex, males have spines behind the eye (on the gill covers) and at the base of the caudal (tail) fin while these are less well developed on females; these are not easy to see however.
Quicker and deeper movement of the gill cover could indicate oxygen depletion, anemia , parasites on the gills or poisoning.
Fish rubbing themselves against objects in the aquarium indicate skin irritation, Which could be caused by parasites ...
Etymology: Operculum= Gill cover
Synonyms:Labrus opercularis, Macropodus viridi-auratus, Macropodus var. viridi auratus, Polyacanthus opercularis ...
Tiger barbs are available in a variety of color morphs ranging from the original orange with black stripes to albinos, "blushers" with translucent gill covers and the "moss green".
Caution should be taken when trying to net these fish. Their serrated gill covers become flared when excited. If they do get caught in the net just put it back into the tank and the fish should release itself.
Note the dark marking runs from gill cover to caudal peduncle with but never crosses over the back (when viewed from above this fish looks very different). The fins of the round-nosed elongate Cory are a pleasing yellow green.
Breeding: Near Breeding time males develop small white bumps on his gill covers and pectoral fin rays right behind his gill. These are called tubercles and are used for stimulating the female to release her eggs.
Groupers are a large marine fish which can be recognized by three spines or plates on their gill coverings. They are hardy aquarium species which require a large tank, and only one species of Grouper per tank.
Bluespotted Grouper
Boenacki Grouper ...
Additional: If fights occur between to establish rank or territorium the fish will protrude the gill covers.
Picture references:
References: Baensch, H. A., Riehl, R.(1982): Aquarien Atlas I. Mergus Verlag, Melle, Germany.
Nervous disorders, loss of appetite, anemia, edema, gasping, flaring of gill covers.
Vitamin B12 (Cyanocobalamine)
Poor appetite, anemia, poor growth.
The neon rosy barb displays an even more intense red against a golden background. The blushing rosy barb has transparent gill covers that let the red gills show through. There are also long-fin varieties of the above strains.
The Scarlet Pin Stripe Wrasse is also referred to as the Secretive Wrasse or Striated Wrasse. This gorgeous fish is a deep red to maroon color with multiple faint horizontal stripes running the length of the body to the gill covering.
By pressing its tongue against the roof of its mouth, it forms a tube through which water is forced by rapidly closing the gill covers.
The face is a pale, dusky-blue with eyes rimmed in yellow and white. The body is a dark, dusky-blue with yellow scale margins giving the French Angelfish a dappled appearance. A yellow smudge highlights the pectoral fin while the gill cover has a ...
In goldfish that are ready for breeding, males will develop small white bumps on his gill covers and pectoral fin rays, that is, on the front of the fin that's right behind his gill.
 See also: Fish, Gill, Water, Species, Aquarium
|
