15 Mar

The cutest nose of rummy nose tetra

Rummy-nose Tetra (Hemigrammus rhodostomus) is a apecies of tropical freshwater characin fish originating in South America, popular among fish-keepers as an aquarium fish. One of many small tetras belonging to the same genus, it is on average 5 cm long when fully grown, and is long established favourite among tropical fishkeepers. The fish is one of several very similar species including hemigrammus bleheri and petitella georgiae, and it is possible that more recently collected specimens available in the aquarium trade are members of one or other of these similar species.The common name applied to most of these fishes is “rummy-nose tetra”‘ though other common names are in circulation {such as “fire-head tetra” for H. bleheri, according to fish base).

The rummy nose tetra is a torpedo-shaped fish, whose basal body color is a translucent silvery color suffesed in some specimens with a greenish tint: iridescent green scales are frequently seen adorning the fish at the point the fontanel ( a part of the head roughly corresponding to the forehead in humans) meets the body. The fins are hyaline, with the exception of the tail fin, this fin being  adorned with black and white horizontal stripes, variable in number, but usually comprising one central black stripe in the central portion of the tail fin, with two horizontal stripes upon each caudal fin lobe, the spaces between the stripes being white, the total count of black stripes being five. The head is a deep red color, iridescent in lustre, with the red continuing into the iris of the eye, and some red coloration extends beyond the operculum or gill plate into the anterior most section of the body proper. Some specimens classified as Hemigrammus rhodostomus posses three black tail stripes instead of five, and some specimens classified as petitella georgiae have a black stripe in the caudal peduncle extending forwards into the body, surmounted above by a thin iridescent gold line, however these features are reliable determinants of species identity has yet to be fully ascertained. Male and female individuals exhibit no obvious, other than  increased fullness of the body outline in ripe females.

For breeding, making pair selection party a matter of luck unless gravid female is available for selection. Again, identical remarks apply to all three species.

The breeding aquarium for rummy-nose tetra, in addition, needs to be sterilised prior to use, as the fish produces eggs that are motoriously sensitive to bacterial and fungal infection. Use of an antifungal agent is strongly advised once spawning is completed in order to prevent various fungi from attacking the eggs.

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