The rummy nose tetra, indigenous to South America, is one of the most popular aquarium fish because of its calm, gentle nature, highly preferred in a community tank. Besides the Hemigrammus rhodostomus, which is in discussion here, the Petitella georgiae, and Hemigrammus bleheri are also referred to as rummy nose tetra. The three species have striking similarities, though the Hemigrammus bleheri or common nose tetra is slightly smaller than the other two.
Scientific Name | Hemigrammus rhodostomus |
Other Names | Firehead tetra |
Origin | Orinoco River, Lower Amazon Basin of South America |
Type | Freshwater fish |
Conservation Status | Not recorded |
Behavioral Characteristics | Peaceful, hardy, friendly, adaptable |
School Size | 5 – 6 |
Physical Traits | Torpedo-shaped glossy body, hyaline textured fins (excepting tail), horizontally striped tail fins |
Scale Texture | Bright and luminous |
Colors | Silver translucent body, iridescent green scales, black and white horizontally-striped tail fin, deep red head, nose, and eyes , with the coloration also spreading to the front part of body |
Size | Small; 2 inches (5cm) |
Lifespan | 5 – 6 years |
Sexual Dimorphism | Not prominent; though on maturation females have a rounder body and a bulging abdomen |
Probable Diseases | Ich and dropsy |
Approximate Price | 80¢ – $1.20 |
Care Level | Expert |
Tank Size | 20 gallons (76 liters) |
Water Parameters
pH Level | 6.4 – 7.0 (water must be soft, and acidic) |
Temperature | 75 – 89 °F (24 – 31°C); prefers warm water |
Hardness | <6 dGH |
Aquarium Water Flow | Moderate |
Tank Ambience
Lighting | Subdued |
Substrate Type | Dark-colored substrate involving thin leaves and Java moss; glass marbles, grass matting |
Tank Mates | Compatible with: Neon tetra, pygmy corydoras, dwarf gourami, guppies, betta, cardinal tetra, discus, harlequin rasbora, barbs, red cherry shrimp, hatchet fish, German blue rams Incompatible with: Larger, aggressive, boisterous aquarium fish like rainbow shark, tiger oscar, red- tailed black shark, flowerhorn cichlid, and angelfish |
Suitable Position in the Tank | Middle |
Feeding
Diet | Flakes, pellets, and granules, as well as live foods like daphnia, bloodworms, and tubifex |
Frequency | 3 times a day |
Note: They get stressed quite easily if there is a change in their living conditions, or even when chased by other fish, that could cause them to show problem behaviors like jumping out of their aquarium. Being shocked or startled suddenly may even take a toll on their life; hence owners should be vigilant enough to ensure that their fish is being kept in proper living conditions.
They are a color variation of the rummy nose tetra (particularly the Hemigrammus rhodostomus), having a shinier and sparkling body. The platinum rummy nose tetras are costlier, with each priced at $2-$3.
A sudden water change or alteration in the tank’s pH level could result in the death of a healthy rummy nose tetra. Regular water change is always advised to keep a check on the pH level though it should be done in small portions (5% of the total volume) over a certain span of time.
Aggression is not something that rummy nose tetras would commonly display, but like any other fish, they may chase or nip at each other during feeding, or when threatened in any way.