User:Gbakes11/Rummy-nose tetra

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The Rummy-nose tetra is a schooling fish which means that the members of each school travel in groups that vary about 6 at minimum to sometimes more than 32 fish. Rummy-nose tetras are also very good at navigating in an environment that is too "noisy" for other fish. In a study about the schooling tendencies, _______ wrote that the Tetras were able to outperform another schooling species of fish called golden shiners (Notemigonuscrysoleucas).[5]

Feeding presents relatively few problems, as the fishes will eagerly devour a range of prepared as well as live fish foods. .However if they have  a flake or pellet based diet, a treat once or twice a week is recommended to give the diet variety. 3rd source and 1st source

The common name applied to most of these fishes is "rummy-nose tetra", though other common names are in circulation (such as "firehead tetra" for H. bleheri, and “false rummy nose tetra” for P. georgiae according to FishBase, and Fishkeeping World**).[1]

--Habitat[edit]

All three species of rummy-nose tetra inhabit river stretches whose water chemistry is mineral-deficient (soft), acidic, and frequently tainted with humic acid decay products from leaf litter upon the river substrates (known as 'blackwaters' because of their appearance). Aquatic plants are sometimes present in these stretches of water, though the upper reaches of the Rio Negro are less densely populated with aquatic flora than the other rivers due to shading from the rainforest canopy. The fishes preferentially inhabit the middle and mid-lower water regions. The fish prefer darker waters as evidence of the eggs and fry being light sensitive. Also 5th source

The rummy-nose tetra (Hemigrammus rhodostomus) is a species of tropical freshwater characin fish originating in South America, popular among fishkeepers as a tropical aquarium fish. One of many small tetras belonging to the same genus, it is on average 5 cm (2 in) long when fully grown. 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 "firehead tetra" for H. bleheri, and “false rummy nose tetra” for P. georgiae according to FishBase, and Fishkeeping World**).

Habitat
All three species of rummy-nose tetra inhabit river stretches whose water chemistry is mineral-deficient (soft), acidic, and frequently tainted with humic acid decay products from leaf litter upon the river substrates (known as 'blackwaters' because of their appearance). Aquatic plants are sometimes present in these stretches of water, though the upper reaches of the Rio Negro are less densely populated with aquatic flora than the other rivers due to shading from the rainforest canopy. The fishes preferentially inhabit the middle and mid-lower water regions. The fish prefer darker waters as evidence of the eggs and fry being light sensitive. Interestingly, although each species is from different parts of South America, when introduced to either of the other two species, all species will remain together.

Behavior
The Rummy-nose tetra is a schooling fish which means that the members of each school travel in groups that vary about 6 at minimum to sometimes more than 32 fish. Rummy-nose tetras are also very good at navigating in an environment that is too "noisy" for other fish. In a study about the schooling tendencies, Puckett, Pokhrel, and Giannini wrote that the Tetras were able to outperform another schooling species of fish called "golden shiners". (Notemigonus crysoleucas). Rummy-nose tetras when schooling tend to rely more on what the individual organism perceives rather than what the group behavior is, which differs from golden shiners (Notemigonus crysoleucas), another type of schooling fish. This can be attributed to the fact that Hemigrammus Bleheri is more attuned to the light gradients that are present in its environment. Rummy-nose tetra while being able to perceive their environment better individually rather than in a group still has the ability to sense what the distance is between them and the nears member of the school, thus decreasing the risk of predation. Interestingly, although each species is from different parts of South America, when introduced to either of the other two species, all species will remain together.

Feeding presents relatively few problems, as the fishes will eagerly devour a range of prepared as well as live fish foods. However, if they have a flake or pellet-based diet, a treat once or twice a week is recommended to give the diet variety. In common with numerous other tetras, these fishes are particularly fond of live bloodworms (these are the aquatic larvae of a midge belonging to the genus Chironomus) and will also devour live Daphnia avidly. Unlike those tetra species which adapt to surface feeding in the aquarium, rummy-nose tetras are not considered likely to add live mosquito larvae to their diet in the aquarium, though instances where these fishes discover and enjoy this food are possible: usually, rummy-nose tetras prefer to take their foods in the middle and lower regions of the aquarium.